diff --git a/src/python/of11/cstruct.py b/src/python/of11/cstruct.py
new file mode 100644
index 0000000..1db5f00
--- /dev/null
+++ b/src/python/of11/cstruct.py
@@ -0,0 +1,6043 @@
+import struct
+
+# Structure definitions
+class ofp_action_mpls_tc(object):
+    """Automatically generated Python class for ofp_action_mpls_tc
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.mpls_tc = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.mpls_tc)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.mpls_tc) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.mpls_tc !=  other.mpls_tc: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'mpls_tc: ' + str(self.mpls_tc) + '\n'
+        return outstr
+
+
+class ofp_aggregate_stats_reply(object):
+    """Automatically generated Python class for ofp_aggregate_stats_reply
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.packet_count = 0
+        self.byte_count = 0
+        self.flow_count = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!QQL", self.packet_count, self.byte_count, self.flow_count)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 24):
+            return binaryString
+        fmt = '!QQL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.packet_count, self.byte_count, self.flow_count) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 20
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[24:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 24
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.packet_count !=  other.packet_count: return False
+        if self.byte_count !=  other.byte_count: return False
+        if self.flow_count !=  other.flow_count: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'packet_count: ' + str(self.packet_count) + '\n'
+        outstr += prefix + 'byte_count: ' + str(self.byte_count) + '\n'
+        outstr += prefix + 'flow_count: ' + str(self.flow_count) + '\n'
+        return outstr
+
+
+class ofp_action_set_queue(object):
+    """Automatically generated Python class for ofp_action_set_queue
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.queue_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.queue_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.queue_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.queue_id !=  other.queue_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'queue_id: ' + str(self.queue_id) + '\n'
+        return outstr
+
+
+class ofp_table_stats(object):
+    """Automatically generated Python class for ofp_table_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.table_id = 0
+        self.pad= [0,0,0,0,0,0,0]
+        self.name= ""
+        self.wildcards = 0
+        self.match = 0
+        self.instructions = 0
+        self.write_actions = 0
+        self.apply_actions = 0
+        self.config = 0
+        self.max_entries = 0
+        self.active_count = 0
+        self.lookup_count = 0
+        self.matched_count = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 7):
+            return (False, "self.pad is not of size 7 as expected.")
+        if(not isinstance(self.name, str)):
+            return (False, "self.name is not string as expected.")
+        if(len(self.name) > 32):
+            return (False, "self.name is not of size 32 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!B", self.table_id)
+        packed += struct.pack("!BBBBBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5], self.pad[6])
+        packed += self.name.ljust(32,'\0')
+        packed += struct.pack("!LLLLLLLLQQ", self.wildcards, self.match, self.instructions, self.write_actions, self.apply_actions, self.config, self.max_entries, self.active_count, self.lookup_count, self.matched_count)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 88):
+            return binaryString
+        fmt = '!B'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.table_id,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBBB'
+        start = 1
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5], self.pad[6]) = struct.unpack(fmt, binaryString[start:end])
+        self.name = binaryString[8:40].replace("\0","")
+        fmt = '!LLLLLLLLQQ'
+        start = 40
+        end = start + struct.calcsize(fmt)
+        (self.wildcards, self.match, self.instructions, self.write_actions, self.apply_actions, self.config, self.max_entries, self.active_count, self.lookup_count, self.matched_count) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[88:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 88
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        if self.name !=  other.name: return False
+        if self.wildcards !=  other.wildcards: return False
+        if self.match !=  other.match: return False
+        if self.instructions !=  other.instructions: return False
+        if self.write_actions !=  other.write_actions: return False
+        if self.apply_actions !=  other.apply_actions: return False
+        if self.config !=  other.config: return False
+        if self.max_entries !=  other.max_entries: return False
+        if self.active_count !=  other.active_count: return False
+        if self.lookup_count !=  other.lookup_count: return False
+        if self.matched_count !=  other.matched_count: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'name: ' + str(self.name) + '\n'
+        outstr += prefix + 'wildcards: ' + str(self.wildcards) + '\n'
+        outstr += prefix + 'match: ' + str(self.match) + '\n'
+        outstr += prefix + 'instructions: ' + str(self.instructions) + '\n'
+        outstr += prefix + 'write_actions: ' + str(self.write_actions) + '\n'
+        outstr += prefix + 'apply_actions: ' + str(self.apply_actions) + '\n'
+        outstr += prefix + 'config: ' + str(self.config) + '\n'
+        outstr += prefix + 'max_entries: ' + str(self.max_entries) + '\n'
+        outstr += prefix + 'active_count: ' + str(self.active_count) + '\n'
+        outstr += prefix + 'lookup_count: ' + str(self.lookup_count) + '\n'
+        outstr += prefix + 'matched_count: ' + str(self.matched_count) + '\n'
+        return outstr
+
+
+class ofp_table_mod(object):
+    """Automatically generated Python class for ofp_table_mod
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.table_id = 0
+        self.pad= [0,0,0]
+        self.config = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!B", self.table_id)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        packed += struct.pack("!L", self.config)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!B'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.table_id,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBB'
+        start = 1
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!L'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.config,) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        if self.config !=  other.config: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'config: ' + str(self.config) + '\n'
+        return outstr
+
+
+class ofp_flow_removed(object):
+    """Automatically generated Python class for ofp_flow_removed
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.cookie = 0
+        self.priority = 0
+        self.reason = 0
+        self.table_id = 0
+        self.duration_sec = 0
+        self.duration_nsec = 0
+        self.idle_timeout = 0
+        self.pad2= [0,0]
+        self.packet_count = 0
+        self.byte_count = 0
+        self.match = ofp_match()
+        self.match.length = OFP_MATCH_BYTES
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 2):
+            return (False, "self.pad2 is not of size 2 as expected.")
+        if(not isinstance(self.match, ofp_match)):
+            return (False, "self.match is not class ofp_match as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!QHBBLLH", self.cookie, self.priority, self.reason, self.table_id, self.duration_sec, self.duration_nsec, self.idle_timeout)
+        packed += struct.pack("!BB", self.pad2[0], self.pad2[1])
+        packed += struct.pack("!QQ", self.packet_count, self.byte_count)
+        packed += self.match.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 128):
+            return binaryString
+        fmt = '!QHBBLLH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.cookie, self.priority, self.reason, self.table_id, self.duration_sec, self.duration_nsec, self.idle_timeout) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 22
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 24
+        end = start + struct.calcsize(fmt)
+        (self.packet_count, self.byte_count) = struct.unpack(fmt,  binaryString[start:end])
+        self.match.unpack(binaryString[40:])
+        return binaryString[128:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 128
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.cookie !=  other.cookie: return False
+        if self.priority !=  other.priority: return False
+        if self.reason !=  other.reason: return False
+        if self.table_id !=  other.table_id: return False
+        if self.duration_sec !=  other.duration_sec: return False
+        if self.duration_nsec !=  other.duration_nsec: return False
+        if self.idle_timeout !=  other.idle_timeout: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.packet_count !=  other.packet_count: return False
+        if self.byte_count !=  other.byte_count: return False
+        if self.match !=  other.match: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'cookie: ' + str(self.cookie) + '\n'
+        outstr += prefix + 'priority: ' + str(self.priority) + '\n'
+        outstr += prefix + 'reason: ' + str(self.reason) + '\n'
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'duration_sec: ' + str(self.duration_sec) + '\n'
+        outstr += prefix + 'duration_nsec: ' + str(self.duration_nsec) + '\n'
+        outstr += prefix + 'idle_timeout: ' + str(self.idle_timeout) + '\n'
+        outstr += prefix + 'packet_count: ' + str(self.packet_count) + '\n'
+        outstr += prefix + 'byte_count: ' + str(self.byte_count) + '\n'
+        outstr += prefix + 'match: \n' 
+        outstr += self.match.show(prefix + '  ')
+        return outstr
+
+
+class ofp_instruction_actions(object):
+    """Automatically generated Python class for ofp_instruction_actions
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.len)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        return outstr
+
+
+class ofp_queue_stats(object):
+    """Automatically generated Python class for ofp_queue_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.queue_id = 0
+        self.tx_bytes = 0
+        self.tx_packets = 0
+        self.tx_errors = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!LLQQQ", self.port_no, self.queue_id, self.tx_bytes, self.tx_packets, self.tx_errors)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 32):
+            return binaryString
+        fmt = '!LLQQQ'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no, self.queue_id, self.tx_bytes, self.tx_packets, self.tx_errors) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[32:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 32
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.queue_id !=  other.queue_id: return False
+        if self.tx_bytes !=  other.tx_bytes: return False
+        if self.tx_packets !=  other.tx_packets: return False
+        if self.tx_errors !=  other.tx_errors: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        outstr += prefix + 'queue_id: ' + str(self.queue_id) + '\n'
+        outstr += prefix + 'tx_bytes: ' + str(self.tx_bytes) + '\n'
+        outstr += prefix + 'tx_packets: ' + str(self.tx_packets) + '\n'
+        outstr += prefix + 'tx_errors: ' + str(self.tx_errors) + '\n'
+        return outstr
+
+
+class ofp_action_tp_port(object):
+    """Automatically generated Python class for ofp_action_tp_port
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.tp_port = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHH", self.type, self.len, self.tp_port)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.tp_port) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 6
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.tp_port !=  other.tp_port: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'tp_port: ' + str(self.tp_port) + '\n'
+        return outstr
+
+
+class ofp_action_nw_ecn(object):
+    """Automatically generated Python class for ofp_action_nw_ecn
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.nw_ecn = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.nw_ecn)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.nw_ecn) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.nw_ecn !=  other.nw_ecn: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'nw_ecn: ' + str(self.nw_ecn) + '\n'
+        return outstr
+
+
+class ofp_group_mod(object):
+    """Automatically generated Python class for ofp_group_mod
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.command = 0
+        self.type = 0
+        self.pad = 0
+        self.group_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HBBL", self.command, self.type, self.pad, self.group_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HBBL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.command, self.type, self.pad, self.group_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.command !=  other.command: return False
+        if self.type !=  other.type: return False
+        if self.pad !=  other.pad: return False
+        if self.group_id !=  other.group_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'command: ' + str(self.command) + '\n'
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'group_id: ' + str(self.group_id) + '\n'
+        return outstr
+
+
+class ofp_port_stats_request(object):
+    """Automatically generated Python class for ofp_port_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port_no)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        return outstr
+
+
+class ofp_stats_request(object):
+    """Automatically generated Python class for ofp_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.flags = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.flags)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.flags) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.flags !=  other.flags: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'flags: ' + str(self.flags) + '\n'
+        return outstr
+
+
+class ofp_instruction(object):
+    """Automatically generated Python class for ofp_instruction
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.len)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        return outstr
+
+
+class ofp_hello(object):
+    """Automatically generated Python class for ofp_hello
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 0):
+            return binaryString
+        return binaryString[0:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 0
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        return outstr
+
+
+class ofp_group_stats_request(object):
+    """Automatically generated Python class for ofp_group_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.group_id = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.group_id)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.group_id,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.group_id !=  other.group_id: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'group_id: ' + str(self.group_id) + '\n'
+        return outstr
+
+
+class ofp_experimenter_header(object):
+    """Automatically generated Python class for ofp_experimenter_header
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.experimenter = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.experimenter)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.experimenter,) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.experimenter !=  other.experimenter: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'experimenter: ' + str(self.experimenter) + '\n'
+        return outstr
+
+
+class ofp_aggregate_stats_request(object):
+    """Automatically generated Python class for ofp_aggregate_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.table_id = 0
+        self.pad= [0,0,0]
+        self.out_port = 0
+        self.out_group = 0
+        self.pad2= [0,0,0,0]
+        self.cookie = 0
+        self.cookie_mask = 0
+        self.match = ofp_match()
+        self.match.length = OFP_MATCH_BYTES
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 4):
+            return (False, "self.pad2 is not of size 4 as expected.")
+        if(not isinstance(self.match, ofp_match)):
+            return (False, "self.match is not class ofp_match as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!B", self.table_id)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        packed += struct.pack("!LL", self.out_port, self.out_group)
+        packed += struct.pack("!BBBB", self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3])
+        packed += struct.pack("!QQ", self.cookie, self.cookie_mask)
+        packed += self.match.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 120):
+            return binaryString
+        fmt = '!B'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.table_id,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBB'
+        start = 1
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!LL'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.out_port, self.out_group) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 12
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 16
+        end = start + struct.calcsize(fmt)
+        (self.cookie, self.cookie_mask) = struct.unpack(fmt,  binaryString[start:end])
+        self.match.unpack(binaryString[32:])
+        return binaryString[120:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 120
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        if self.out_port !=  other.out_port: return False
+        if self.out_group !=  other.out_group: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.cookie !=  other.cookie: return False
+        if self.cookie_mask !=  other.cookie_mask: return False
+        if self.match !=  other.match: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'out_port: ' + str(self.out_port) + '\n'
+        outstr += prefix + 'out_group: ' + str(self.out_group) + '\n'
+        outstr += prefix + 'cookie: ' + str(self.cookie) + '\n'
+        outstr += prefix + 'cookie_mask: ' + str(self.cookie_mask) + '\n'
+        outstr += prefix + 'match: \n' 
+        outstr += self.match.show(prefix + '  ')
+        return outstr
+
+
+class ofp_queue_get_config_request(object):
+    """Automatically generated Python class for ofp_queue_get_config_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port,) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port !=  other.port: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port: ' + str(self.port) + '\n'
+        return outstr
+
+
+class ofp_instruction_experimenter(object):
+    """Automatically generated Python class for ofp_instruction_experimenter
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.experimenter = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.experimenter)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.experimenter) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.experimenter !=  other.experimenter: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'experimenter: ' + str(self.experimenter) + '\n'
+        return outstr
+
+
+class ofp_action_nw_ttl(object):
+    """Automatically generated Python class for ofp_action_nw_ttl
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.nw_ttl = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.nw_ttl)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.nw_ttl) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.nw_ttl !=  other.nw_ttl: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'nw_ttl: ' + str(self.nw_ttl) + '\n'
+        return outstr
+
+
+class ofp_port_status(object):
+    """Automatically generated Python class for ofp_port_status
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.reason = 0
+        self.pad= [0,0,0,0,0,0,0]
+        self.desc = ofp_port()
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 7):
+            return (False, "self.pad is not of size 7 as expected.")
+        if(not isinstance(self.desc, ofp_port)):
+            return (False, "self.desc is not class ofp_port as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!B", self.reason)
+        packed += struct.pack("!BBBBBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5], self.pad[6])
+        packed += self.desc.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 72):
+            return binaryString
+        fmt = '!B'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.reason,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBBB'
+        start = 1
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5], self.pad[6]) = struct.unpack(fmt, binaryString[start:end])
+        self.desc.unpack(binaryString[8:])
+        return binaryString[72:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 72
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.reason !=  other.reason: return False
+        if self.pad !=  other.pad: return False
+        if self.desc !=  other.desc: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'reason: ' + str(self.reason) + '\n'
+        outstr += prefix + 'desc: \n' 
+        outstr += self.desc.show(prefix + '  ')
+        return outstr
+
+
+class ofp_action_header(object):
+    """Automatically generated Python class for ofp_action_header
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.len)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        return outstr
+
+
+class ofp_port_mod(object):
+    """Automatically generated Python class for ofp_port_mod
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.pad= [0,0,0,0]
+        self.hw_addr= [0,0,0,0,0,0]
+        self.pad2= [0,0]
+        self.config = 0
+        self.mask = 0
+        self.advertise = 0
+        self.pad3= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        if(not isinstance(self.hw_addr, list)):
+            return (False, "self.hw_addr is not list as expected.")
+        if(len(self.hw_addr) != 6):
+            return (False, "self.hw_addr is not of size 6 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 2):
+            return (False, "self.pad2 is not of size 2 as expected.")
+        if(not isinstance(self.pad3, list)):
+            return (False, "self.pad3 is not list as expected.")
+        if(len(self.pad3) != 4):
+            return (False, "self.pad3 is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port_no)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        packed += struct.pack("!BBBBBB", self.hw_addr[0], self.hw_addr[1], self.hw_addr[2], self.hw_addr[3], self.hw_addr[4], self.hw_addr[5])
+        packed += struct.pack("!BB", self.pad2[0], self.pad2[1])
+        packed += struct.pack("!LLL", self.config, self.mask, self.advertise)
+        packed += struct.pack("!BBBB", self.pad3[0], self.pad3[1], self.pad3[2], self.pad3[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 32):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 8
+        end = start + struct.calcsize(fmt)
+        (self.hw_addr[0], self.hw_addr[1], self.hw_addr[2], self.hw_addr[3], self.hw_addr[4], self.hw_addr[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BB'
+        start = 14
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!LLL'
+        start = 16
+        end = start + struct.calcsize(fmt)
+        (self.config, self.mask, self.advertise) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 28
+        end = start + struct.calcsize(fmt)
+        (self.pad3[0], self.pad3[1], self.pad3[2], self.pad3[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[32:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 32
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.pad !=  other.pad: return False
+        if self.hw_addr !=  other.hw_addr: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.config !=  other.config: return False
+        if self.mask !=  other.mask: return False
+        if self.advertise !=  other.advertise: return False
+        if self.pad3 !=  other.pad3: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        outstr += prefix + 'hw_addr: ' + str(self.hw_addr) + '\n'
+        outstr += prefix + 'config: ' + str(self.config) + '\n'
+        outstr += prefix + 'mask: ' + str(self.mask) + '\n'
+        outstr += prefix + 'advertise: ' + str(self.advertise) + '\n'
+        return outstr
+
+
+class ofp_action_vlan_vid(object):
+    """Automatically generated Python class for ofp_action_vlan_vid
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.vlan_vid = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHH", self.type, self.len, self.vlan_vid)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.vlan_vid) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 6
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.vlan_vid !=  other.vlan_vid: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'vlan_vid: ' + str(self.vlan_vid) + '\n'
+        return outstr
+
+
+class ofp_action_output(object):
+    """Automatically generated Python class for ofp_action_output
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.port = 0
+        self.max_len = 0
+        self.pad= [0,0,0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 6):
+            return (False, "self.pad is not of size 6 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHLH", self.type, self.len, self.port, self.max_len)
+        packed += struct.pack("!BBBBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        fmt = '!HHLH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.port, self.max_len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 10
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.port !=  other.port: return False
+        if self.max_len !=  other.max_len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'port: ' + str(self.port) + '\n'
+        outstr += prefix + 'max_len: ' + str(self.max_len) + '\n'
+        return outstr
+
+
+class ofp_switch_config(object):
+    """Automatically generated Python class for ofp_switch_config
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.flags = 0
+        self.miss_send_len = 128
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.flags, self.miss_send_len)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.flags, self.miss_send_len) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.flags !=  other.flags: return False
+        if self.miss_send_len !=  other.miss_send_len: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'flags: ' + str(self.flags) + '\n'
+        outstr += prefix + 'miss_send_len: ' + str(self.miss_send_len) + '\n'
+        return outstr
+
+
+class ofp_action_nw_tos(object):
+    """Automatically generated Python class for ofp_action_nw_tos
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.nw_tos = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.nw_tos)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.nw_tos) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.nw_tos !=  other.nw_tos: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'nw_tos: ' + str(self.nw_tos) + '\n'
+        return outstr
+
+
+class ofp_action_experimenter_header(object):
+    """Automatically generated Python class for ofp_action_experimenter_header
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.experimenter = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.experimenter)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.experimenter) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.experimenter !=  other.experimenter: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'experimenter: ' + str(self.experimenter) + '\n'
+        return outstr
+
+
+class ofp_queue_get_config_reply(object):
+    """Automatically generated Python class for ofp_queue_get_config_reply
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port !=  other.port: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port: ' + str(self.port) + '\n'
+        return outstr
+
+
+class ofp_queue_prop_header(object):
+    """Automatically generated Python class for ofp_queue_prop_header
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.property = 0
+        self.len = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.property, self.len)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.property, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.property !=  other.property: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'property: ' + str(self.property) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        return outstr
+
+
+class ofp_packet_in(object):
+    """Automatically generated Python class for ofp_packet_in
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.buffer_id = 0
+        self.in_port = 0
+        self.in_phy_port = 0
+        self.total_len = 0
+        self.reason = 0
+        self.table_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!LLLHBB", self.buffer_id, self.in_port, self.in_phy_port, self.total_len, self.reason, self.table_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        fmt = '!LLLHBB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.buffer_id, self.in_port, self.in_phy_port, self.total_len, self.reason, self.table_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.buffer_id !=  other.buffer_id: return False
+        if self.in_port !=  other.in_port: return False
+        if self.in_phy_port !=  other.in_phy_port: return False
+        if self.total_len !=  other.total_len: return False
+        if self.reason !=  other.reason: return False
+        if self.table_id !=  other.table_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'buffer_id: ' + str(self.buffer_id) + '\n'
+        outstr += prefix + 'in_port: ' + str(self.in_port) + '\n'
+        outstr += prefix + 'in_phy_port: ' + str(self.in_phy_port) + '\n'
+        outstr += prefix + 'total_len: ' + str(self.total_len) + '\n'
+        outstr += prefix + 'reason: ' + str(self.reason) + '\n'
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        return outstr
+
+
+class ofp_instruction_write_metadata(object):
+    """Automatically generated Python class for ofp_instruction_write_metadata
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.pad= [0,0,0,0]
+        self.metadata = 0
+        self.metadata_mask = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.len)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        packed += struct.pack("!QQ", self.metadata, self.metadata_mask)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 24):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 8
+        end = start + struct.calcsize(fmt)
+        (self.metadata, self.metadata_mask) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[24:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 24
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        if self.metadata !=  other.metadata: return False
+        if self.metadata_mask !=  other.metadata_mask: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'metadata: ' + str(self.metadata) + '\n'
+        outstr += prefix + 'metadata_mask: ' + str(self.metadata_mask) + '\n'
+        return outstr
+
+
+class ofp_flow_stats(object):
+    """Automatically generated Python class for ofp_flow_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.length = 0
+        self.table_id = 0
+        self.pad = 0
+        self.duration_sec = 0
+        self.duration_nsec = 0
+        self.priority = 0x8000
+        self.idle_timeout = 0
+        self.hard_timeout = 0
+        self.pad2= [0,0,0,0,0,0]
+        self.cookie = 0
+        self.packet_count = 0
+        self.byte_count = 0
+        self.match = ofp_match()
+        self.match.length = OFP_MATCH_BYTES
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 6):
+            return (False, "self.pad2 is not of size 6 as expected.")
+        if(not isinstance(self.match, ofp_match)):
+            return (False, "self.match is not class ofp_match as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HBBLLHHH", self.length, self.table_id, self.pad, self.duration_sec, self.duration_nsec, self.priority, self.idle_timeout, self.hard_timeout)
+        packed += struct.pack("!BBBBBB", self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3], self.pad2[4], self.pad2[5])
+        packed += struct.pack("!QQQ", self.cookie, self.packet_count, self.byte_count)
+        packed += self.match.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 136):
+            return binaryString
+        fmt = '!HBBLLHHH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.length, self.table_id, self.pad, self.duration_sec, self.duration_nsec, self.priority, self.idle_timeout, self.hard_timeout) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 18
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3], self.pad2[4], self.pad2[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQQ'
+        start = 24
+        end = start + struct.calcsize(fmt)
+        (self.cookie, self.packet_count, self.byte_count) = struct.unpack(fmt,  binaryString[start:end])
+        self.match.unpack(binaryString[48:])
+        return binaryString[136:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 136
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.length !=  other.length: return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        if self.duration_sec !=  other.duration_sec: return False
+        if self.duration_nsec !=  other.duration_nsec: return False
+        if self.priority !=  other.priority: return False
+        if self.idle_timeout !=  other.idle_timeout: return False
+        if self.hard_timeout !=  other.hard_timeout: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.cookie !=  other.cookie: return False
+        if self.packet_count !=  other.packet_count: return False
+        if self.byte_count !=  other.byte_count: return False
+        if self.match !=  other.match: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'length: ' + str(self.length) + '\n'
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'duration_sec: ' + str(self.duration_sec) + '\n'
+        outstr += prefix + 'duration_nsec: ' + str(self.duration_nsec) + '\n'
+        outstr += prefix + 'priority: ' + str(self.priority) + '\n'
+        outstr += prefix + 'idle_timeout: ' + str(self.idle_timeout) + '\n'
+        outstr += prefix + 'hard_timeout: ' + str(self.hard_timeout) + '\n'
+        outstr += prefix + 'cookie: ' + str(self.cookie) + '\n'
+        outstr += prefix + 'packet_count: ' + str(self.packet_count) + '\n'
+        outstr += prefix + 'byte_count: ' + str(self.byte_count) + '\n'
+        outstr += prefix + 'match: \n' 
+        outstr += self.match.show(prefix + '  ')
+        return outstr
+
+
+class ofp_action_mpls_label(object):
+    """Automatically generated Python class for ofp_action_mpls_label
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.mpls_label = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.mpls_label)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.mpls_label) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.mpls_label !=  other.mpls_label: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'mpls_label: ' + str(self.mpls_label) + '\n'
+        return outstr
+
+
+class ofp_flow_stats_request(object):
+    """Automatically generated Python class for ofp_flow_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.table_id = 0
+        self.pad= [0,0,0]
+        self.out_port = 0
+        self.out_group = 0
+        self.pad2= [0,0,0,0]
+        self.cookie = 0
+        self.cookie_mask = 0
+        self.match = ofp_match()
+        self.match.length = OFP_MATCH_BYTES
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 4):
+            return (False, "self.pad2 is not of size 4 as expected.")
+        if(not isinstance(self.match, ofp_match)):
+            return (False, "self.match is not class ofp_match as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!B", self.table_id)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        packed += struct.pack("!LL", self.out_port, self.out_group)
+        packed += struct.pack("!BBBB", self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3])
+        packed += struct.pack("!QQ", self.cookie, self.cookie_mask)
+        packed += self.match.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 120):
+            return binaryString
+        fmt = '!B'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.table_id,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBB'
+        start = 1
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!LL'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.out_port, self.out_group) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 12
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 16
+        end = start + struct.calcsize(fmt)
+        (self.cookie, self.cookie_mask) = struct.unpack(fmt,  binaryString[start:end])
+        self.match.unpack(binaryString[32:])
+        return binaryString[120:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 120
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        if self.out_port !=  other.out_port: return False
+        if self.out_group !=  other.out_group: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.cookie !=  other.cookie: return False
+        if self.cookie_mask !=  other.cookie_mask: return False
+        if self.match !=  other.match: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'out_port: ' + str(self.out_port) + '\n'
+        outstr += prefix + 'out_group: ' + str(self.out_group) + '\n'
+        outstr += prefix + 'cookie: ' + str(self.cookie) + '\n'
+        outstr += prefix + 'cookie_mask: ' + str(self.cookie_mask) + '\n'
+        outstr += prefix + 'match: \n' 
+        outstr += self.match.show(prefix + '  ')
+        return outstr
+
+
+class ofp_header(object):
+    """Automatically generated Python class for ofp_header
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.version = 0x02
+        self.type = 0
+        self.length = 0
+        self.xid = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if (not (self.type in ofp_type_map.keys())):
+            return (False, "type must have values from ofp_type_map.keys()")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!BBHL", self.version, self.type, self.length, self.xid)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!BBHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.version, self.type, self.length, self.xid) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.version !=  other.version: return False
+        if self.type !=  other.type: return False
+        if self.length !=  other.length: return False
+        if self.xid !=  other.xid: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'version: ' + str(self.version) + '\n'
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'length: ' + str(self.length) + '\n'
+        outstr += prefix + 'xid: ' + str(self.xid) + '\n'
+        return outstr
+
+
+class ofp_stats_reply(object):
+    """Automatically generated Python class for ofp_stats_reply
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.flags = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.flags)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.flags) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.flags !=  other.flags: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'flags: ' + str(self.flags) + '\n'
+        return outstr
+
+
+class ofp_queue_stats_request(object):
+    """Automatically generated Python class for ofp_queue_stats_request
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.queue_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!LL", self.port_no, self.queue_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!LL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no, self.queue_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.queue_id !=  other.queue_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        outstr += prefix + 'queue_id: ' + str(self.queue_id) + '\n'
+        return outstr
+
+
+class ofp_desc_stats(object):
+    """Automatically generated Python class for ofp_desc_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.mfr_desc= ""
+        self.hw_desc= ""
+        self.sw_desc= ""
+        self.serial_num= ""
+        self.dp_desc= ""
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.mfr_desc, str)):
+            return (False, "self.mfr_desc is not string as expected.")
+        if(len(self.mfr_desc) > 256):
+            return (False, "self.mfr_desc is not of size 256 as expected.")
+        if(not isinstance(self.hw_desc, str)):
+            return (False, "self.hw_desc is not string as expected.")
+        if(len(self.hw_desc) > 256):
+            return (False, "self.hw_desc is not of size 256 as expected.")
+        if(not isinstance(self.sw_desc, str)):
+            return (False, "self.sw_desc is not string as expected.")
+        if(len(self.sw_desc) > 256):
+            return (False, "self.sw_desc is not of size 256 as expected.")
+        if(not isinstance(self.serial_num, str)):
+            return (False, "self.serial_num is not string as expected.")
+        if(len(self.serial_num) > 32):
+            return (False, "self.serial_num is not of size 32 as expected.")
+        if(not isinstance(self.dp_desc, str)):
+            return (False, "self.dp_desc is not string as expected.")
+        if(len(self.dp_desc) > 256):
+            return (False, "self.dp_desc is not of size 256 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += self.mfr_desc.ljust(256,'\0')
+        packed += self.hw_desc.ljust(256,'\0')
+        packed += self.sw_desc.ljust(256,'\0')
+        packed += self.serial_num.ljust(32,'\0')
+        packed += self.dp_desc.ljust(256,'\0')
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 1056):
+            return binaryString
+        self.mfr_desc = binaryString[0:256].replace("\0","")
+        self.hw_desc = binaryString[256:512].replace("\0","")
+        self.sw_desc = binaryString[512:768].replace("\0","")
+        self.serial_num = binaryString[768:800].replace("\0","")
+        self.dp_desc = binaryString[800:1056].replace("\0","")
+        return binaryString[1056:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 1056
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.mfr_desc !=  other.mfr_desc: return False
+        if self.hw_desc !=  other.hw_desc: return False
+        if self.sw_desc !=  other.sw_desc: return False
+        if self.serial_num !=  other.serial_num: return False
+        if self.dp_desc !=  other.dp_desc: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'mfr_desc: ' + str(self.mfr_desc) + '\n'
+        outstr += prefix + 'hw_desc: ' + str(self.hw_desc) + '\n'
+        outstr += prefix + 'sw_desc: ' + str(self.sw_desc) + '\n'
+        outstr += prefix + 'serial_num: ' + str(self.serial_num) + '\n'
+        outstr += prefix + 'dp_desc: ' + str(self.dp_desc) + '\n'
+        return outstr
+
+
+class ofp_match(object):
+    """Automatically generated Python class for ofp_match
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.length = 0
+        self.in_port = 0
+        self.wildcards = 0
+        self.dl_src= [0,0,0,0,0,0]
+        self.dl_src_mask= [0,0,0,0,0,0]
+        self.dl_dst= [0,0,0,0,0,0]
+        self.dl_dst_mask= [0,0,0,0,0,0]
+        self.dl_vlan = 0
+        self.dl_vlan_pcp = 0
+        self.pad1 = 0
+        self.dl_type = 0
+        self.nw_tos = 0
+        self.nw_proto = 0
+        self.nw_src = 0
+        self.nw_src_mask = 0
+        self.nw_dst = 0
+        self.nw_dst_mask = 0
+        self.tp_src = 0
+        self.tp_dst = 0
+        self.mpls_label = 0
+        self.mpls_tc = 0
+        self.pad2= [0,0,0]
+        self.metadata = 0
+        self.metadata_mask = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.dl_src, list)):
+            return (False, "self.dl_src is not list as expected.")
+        if(len(self.dl_src) != 6):
+            return (False, "self.dl_src is not of size 6 as expected.")
+        if(not isinstance(self.dl_src_mask, list)):
+            return (False, "self.dl_src_mask is not list as expected.")
+        if(len(self.dl_src_mask) != 6):
+            return (False, "self.dl_src_mask is not of size 6 as expected.")
+        if(not isinstance(self.dl_dst, list)):
+            return (False, "self.dl_dst is not list as expected.")
+        if(len(self.dl_dst) != 6):
+            return (False, "self.dl_dst is not of size 6 as expected.")
+        if(not isinstance(self.dl_dst_mask, list)):
+            return (False, "self.dl_dst_mask is not list as expected.")
+        if(len(self.dl_dst_mask) != 6):
+            return (False, "self.dl_dst_mask is not of size 6 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 3):
+            return (False, "self.pad2 is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHLL", self.type, self.length, self.in_port, self.wildcards)
+        packed += struct.pack("!BBBBBB", self.dl_src[0], self.dl_src[1], self.dl_src[2], self.dl_src[3], self.dl_src[4], self.dl_src[5])
+        packed += struct.pack("!BBBBBB", self.dl_src_mask[0], self.dl_src_mask[1], self.dl_src_mask[2], self.dl_src_mask[3], self.dl_src_mask[4], self.dl_src_mask[5])
+        packed += struct.pack("!BBBBBB", self.dl_dst[0], self.dl_dst[1], self.dl_dst[2], self.dl_dst[3], self.dl_dst[4], self.dl_dst[5])
+        packed += struct.pack("!BBBBBB", self.dl_dst_mask[0], self.dl_dst_mask[1], self.dl_dst_mask[2], self.dl_dst_mask[3], self.dl_dst_mask[4], self.dl_dst_mask[5])
+        packed += struct.pack("!HBBHBBLLLLHHLB", self.dl_vlan, self.dl_vlan_pcp, self.pad1, self.dl_type, self.nw_tos, self.nw_proto, self.nw_src, self.nw_src_mask, self.nw_dst, self.nw_dst_mask, self.tp_src, self.tp_dst, self.mpls_label, self.mpls_tc)
+        packed += struct.pack("!BBB", self.pad2[0], self.pad2[1], self.pad2[2])
+        packed += struct.pack("!QQ", self.metadata, self.metadata_mask)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 88):
+            return binaryString
+        fmt = '!HHLL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.length, self.in_port, self.wildcards) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 12
+        end = start + struct.calcsize(fmt)
+        (self.dl_src[0], self.dl_src[1], self.dl_src[2], self.dl_src[3], self.dl_src[4], self.dl_src[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 18
+        end = start + struct.calcsize(fmt)
+        (self.dl_src_mask[0], self.dl_src_mask[1], self.dl_src_mask[2], self.dl_src_mask[3], self.dl_src_mask[4], self.dl_src_mask[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 24
+        end = start + struct.calcsize(fmt)
+        (self.dl_dst[0], self.dl_dst[1], self.dl_dst[2], self.dl_dst[3], self.dl_dst[4], self.dl_dst[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 30
+        end = start + struct.calcsize(fmt)
+        (self.dl_dst_mask[0], self.dl_dst_mask[1], self.dl_dst_mask[2], self.dl_dst_mask[3], self.dl_dst_mask[4], self.dl_dst_mask[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!HBBHBBLLLLHHLB'
+        start = 36
+        end = start + struct.calcsize(fmt)
+        (self.dl_vlan, self.dl_vlan_pcp, self.pad1, self.dl_type, self.nw_tos, self.nw_proto, self.nw_src, self.nw_src_mask, self.nw_dst, self.nw_dst_mask, self.tp_src, self.tp_dst, self.mpls_label, self.mpls_tc) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 69
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1], self.pad2[2]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 72
+        end = start + struct.calcsize(fmt)
+        (self.metadata, self.metadata_mask) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[88:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 88
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.length !=  other.length: return False
+        if self.in_port !=  other.in_port: return False
+        if self.wildcards !=  other.wildcards: return False
+        if self.dl_src !=  other.dl_src: return False
+        if self.dl_src_mask !=  other.dl_src_mask: return False
+        if self.dl_dst !=  other.dl_dst: return False
+        if self.dl_dst_mask !=  other.dl_dst_mask: return False
+        if self.dl_vlan !=  other.dl_vlan: return False
+        if self.dl_vlan_pcp !=  other.dl_vlan_pcp: return False
+        if self.pad1 !=  other.pad1: return False
+        if self.dl_type !=  other.dl_type: return False
+        if self.nw_tos !=  other.nw_tos: return False
+        if self.nw_proto !=  other.nw_proto: return False
+        if self.nw_src !=  other.nw_src: return False
+        if self.nw_src_mask !=  other.nw_src_mask: return False
+        if self.nw_dst !=  other.nw_dst: return False
+        if self.nw_dst_mask !=  other.nw_dst_mask: return False
+        if self.tp_src !=  other.tp_src: return False
+        if self.tp_dst !=  other.tp_dst: return False
+        if self.mpls_label !=  other.mpls_label: return False
+        if self.mpls_tc !=  other.mpls_tc: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.metadata !=  other.metadata: return False
+        if self.metadata_mask !=  other.metadata_mask: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'length: ' + str(self.length) + '\n'
+        outstr += prefix + 'in_port: ' + str(self.in_port) + '\n'
+        outstr += prefix + 'wildcards: ' + str(self.wildcards) + '\n'
+        outstr += prefix + 'dl_src: ' + str(self.dl_src) + '\n'
+        outstr += prefix + 'dl_src_mask: ' + str(self.dl_src_mask) + '\n'
+        outstr += prefix + 'dl_dst: ' + str(self.dl_dst) + '\n'
+        outstr += prefix + 'dl_dst_mask: ' + str(self.dl_dst_mask) + '\n'
+        outstr += prefix + 'dl_vlan: ' + str(self.dl_vlan) + '\n'
+        outstr += prefix + 'dl_vlan_pcp: ' + str(self.dl_vlan_pcp) + '\n'
+        outstr += prefix + 'dl_type: ' + str(self.dl_type) + '\n'
+        outstr += prefix + 'nw_tos: ' + str(self.nw_tos) + '\n'
+        outstr += prefix + 'nw_proto: ' + str(self.nw_proto) + '\n'
+        outstr += prefix + 'nw_src: ' + str(self.nw_src) + '\n'
+        outstr += prefix + 'nw_src_mask: ' + str(self.nw_src_mask) + '\n'
+        outstr += prefix + 'nw_dst: ' + str(self.nw_dst) + '\n'
+        outstr += prefix + 'nw_dst_mask: ' + str(self.nw_dst_mask) + '\n'
+        outstr += prefix + 'tp_src: ' + str(self.tp_src) + '\n'
+        outstr += prefix + 'tp_dst: ' + str(self.tp_dst) + '\n'
+        outstr += prefix + 'mpls_label: ' + str(self.mpls_label) + '\n'
+        outstr += prefix + 'mpls_tc: ' + str(self.mpls_tc) + '\n'
+        outstr += prefix + 'metadata: ' + str(self.metadata) + '\n'
+        outstr += prefix + 'metadata_mask: ' + str(self.metadata_mask) + '\n'
+        return outstr
+
+
+class ofp_port_stats(object):
+    """Automatically generated Python class for ofp_port_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.pad= [0,0,0,0]
+        self.rx_packets = 0
+        self.tx_packets = 0
+        self.rx_bytes = 0
+        self.tx_bytes = 0
+        self.rx_dropped = 0
+        self.tx_dropped = 0
+        self.rx_errors = 0
+        self.tx_errors = 0
+        self.rx_frame_err = 0
+        self.rx_over_err = 0
+        self.rx_crc_err = 0
+        self.collisions = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port_no)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        packed += struct.pack("!QQQQQQQQQQQQ", self.rx_packets, self.tx_packets, self.rx_bytes, self.tx_bytes, self.rx_dropped, self.tx_dropped, self.rx_errors, self.tx_errors, self.rx_frame_err, self.rx_over_err, self.rx_crc_err, self.collisions)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 104):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQQQQQQQQQQQ'
+        start = 8
+        end = start + struct.calcsize(fmt)
+        (self.rx_packets, self.tx_packets, self.rx_bytes, self.tx_bytes, self.rx_dropped, self.tx_dropped, self.rx_errors, self.tx_errors, self.rx_frame_err, self.rx_over_err, self.rx_crc_err, self.collisions) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[104:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 104
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.pad !=  other.pad: return False
+        if self.rx_packets !=  other.rx_packets: return False
+        if self.tx_packets !=  other.tx_packets: return False
+        if self.rx_bytes !=  other.rx_bytes: return False
+        if self.tx_bytes !=  other.tx_bytes: return False
+        if self.rx_dropped !=  other.rx_dropped: return False
+        if self.tx_dropped !=  other.tx_dropped: return False
+        if self.rx_errors !=  other.rx_errors: return False
+        if self.tx_errors !=  other.tx_errors: return False
+        if self.rx_frame_err !=  other.rx_frame_err: return False
+        if self.rx_over_err !=  other.rx_over_err: return False
+        if self.rx_crc_err !=  other.rx_crc_err: return False
+        if self.collisions !=  other.collisions: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        outstr += prefix + 'rx_packets: ' + str(self.rx_packets) + '\n'
+        outstr += prefix + 'tx_packets: ' + str(self.tx_packets) + '\n'
+        outstr += prefix + 'rx_bytes: ' + str(self.rx_bytes) + '\n'
+        outstr += prefix + 'tx_bytes: ' + str(self.tx_bytes) + '\n'
+        outstr += prefix + 'rx_dropped: ' + str(self.rx_dropped) + '\n'
+        outstr += prefix + 'tx_dropped: ' + str(self.tx_dropped) + '\n'
+        outstr += prefix + 'rx_errors: ' + str(self.rx_errors) + '\n'
+        outstr += prefix + 'tx_errors: ' + str(self.tx_errors) + '\n'
+        outstr += prefix + 'rx_frame_err: ' + str(self.rx_frame_err) + '\n'
+        outstr += prefix + 'rx_over_err: ' + str(self.rx_over_err) + '\n'
+        outstr += prefix + 'rx_crc_err: ' + str(self.rx_crc_err) + '\n'
+        outstr += prefix + 'collisions: ' + str(self.collisions) + '\n'
+        return outstr
+
+
+class ofp_packet_queue(object):
+    """Automatically generated Python class for ofp_packet_queue
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.queue_id = 0
+        self.len = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!LH", self.queue_id, self.len)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!LH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.queue_id, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 6
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.queue_id !=  other.queue_id: return False
+        if self.len !=  other.len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'queue_id: ' + str(self.queue_id) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        return outstr
+
+
+class ofp_port(object):
+    """Automatically generated Python class for ofp_port
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.port_no = 0
+        self.pad= [0,0,0,0]
+        self.hw_addr= [0,0,0,0,0,0]
+        self.pad2= [0,0]
+        self.name= ""
+        self.config = 0
+        self.state = 0
+        self.curr = 0
+        self.advertised = 0
+        self.supported = 0
+        self.peer = 0
+        self.curr_speed = 0
+        self.max_speed = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        if(not isinstance(self.hw_addr, list)):
+            return (False, "self.hw_addr is not list as expected.")
+        if(len(self.hw_addr) != 6):
+            return (False, "self.hw_addr is not of size 6 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 2):
+            return (False, "self.pad2 is not of size 2 as expected.")
+        if(not isinstance(self.name, str)):
+            return (False, "self.name is not string as expected.")
+        if(len(self.name) > 16):
+            return (False, "self.name is not of size 16 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!L", self.port_no)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        packed += struct.pack("!BBBBBB", self.hw_addr[0], self.hw_addr[1], self.hw_addr[2], self.hw_addr[3], self.hw_addr[4], self.hw_addr[5])
+        packed += struct.pack("!BB", self.pad2[0], self.pad2[1])
+        packed += self.name.ljust(16,'\0')
+        packed += struct.pack("!LLLLLLLL", self.config, self.state, self.curr, self.advertised, self.supported, self.peer, self.curr_speed, self.max_speed)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 64):
+            return binaryString
+        fmt = '!L'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.port_no,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 8
+        end = start + struct.calcsize(fmt)
+        (self.hw_addr[0], self.hw_addr[1], self.hw_addr[2], self.hw_addr[3], self.hw_addr[4], self.hw_addr[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BB'
+        start = 14
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1]) = struct.unpack(fmt, binaryString[start:end])
+        self.name = binaryString[16:32].replace("\0","")
+        fmt = '!LLLLLLLL'
+        start = 32
+        end = start + struct.calcsize(fmt)
+        (self.config, self.state, self.curr, self.advertised, self.supported, self.peer, self.curr_speed, self.max_speed) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[64:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 64
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.port_no !=  other.port_no: return False
+        if self.pad !=  other.pad: return False
+        if self.hw_addr !=  other.hw_addr: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.name !=  other.name: return False
+        if self.config !=  other.config: return False
+        if self.state !=  other.state: return False
+        if self.curr !=  other.curr: return False
+        if self.advertised !=  other.advertised: return False
+        if self.supported !=  other.supported: return False
+        if self.peer !=  other.peer: return False
+        if self.curr_speed !=  other.curr_speed: return False
+        if self.max_speed !=  other.max_speed: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'port_no: ' + str(self.port_no) + '\n'
+        outstr += prefix + 'hw_addr: ' + str(self.hw_addr) + '\n'
+        outstr += prefix + 'name: ' + str(self.name) + '\n'
+        outstr += prefix + 'config: ' + str(self.config) + '\n'
+        outstr += prefix + 'state: ' + str(self.state) + '\n'
+        outstr += prefix + 'curr: ' + str(self.curr) + '\n'
+        outstr += prefix + 'advertised: ' + str(self.advertised) + '\n'
+        outstr += prefix + 'supported: ' + str(self.supported) + '\n'
+        outstr += prefix + 'peer: ' + str(self.peer) + '\n'
+        outstr += prefix + 'curr_speed: ' + str(self.curr_speed) + '\n'
+        outstr += prefix + 'max_speed: ' + str(self.max_speed) + '\n'
+        return outstr
+
+
+class ofp_action_dl_addr(object):
+    """Automatically generated Python class for ofp_action_dl_addr
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.dl_addr= [0,0,0,0,0,0]
+        self.pad= [0,0,0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.dl_addr, list)):
+            return (False, "self.dl_addr is not list as expected.")
+        if(len(self.dl_addr) != 6):
+            return (False, "self.dl_addr is not of size 6 as expected.")
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 6):
+            return (False, "self.pad is not of size 6 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.len)
+        packed += struct.pack("!BBBBBB", self.dl_addr[0], self.dl_addr[1], self.dl_addr[2], self.dl_addr[3], self.dl_addr[4], self.dl_addr[5])
+        packed += struct.pack("!BBBBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.dl_addr[0], self.dl_addr[1], self.dl_addr[2], self.dl_addr[3], self.dl_addr[4], self.dl_addr[5]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 10
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.dl_addr !=  other.dl_addr: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'dl_addr: ' + str(self.dl_addr) + '\n'
+        return outstr
+
+
+class ofp_bucket_counter(object):
+    """Automatically generated Python class for ofp_bucket_counter
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.packet_count = 0
+        self.byte_count = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!QQ", self.packet_count, self.byte_count)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        fmt = '!QQ'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.packet_count, self.byte_count) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.packet_count !=  other.packet_count: return False
+        if self.byte_count !=  other.byte_count: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'packet_count: ' + str(self.packet_count) + '\n'
+        outstr += prefix + 'byte_count: ' + str(self.byte_count) + '\n'
+        return outstr
+
+
+class ofp_queue_prop_min_rate(object):
+    """Automatically generated Python class for ofp_queue_prop_min_rate
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.prop_header = ofp_queue_prop_header()
+        self.rate = 0
+        self.pad= [0,0,0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.prop_header, ofp_queue_prop_header)):
+            return (False, "self.prop_header is not class ofp_queue_prop_header as expected.")
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 6):
+            return (False, "self.pad is not of size 6 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += self.prop_header.pack()
+        packed += struct.pack("!H", self.rate)
+        packed += struct.pack("!BBBBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        self.prop_header.unpack(binaryString[0:])
+        fmt = '!H'
+        start = 8
+        end = start + struct.calcsize(fmt)
+        (self.rate,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BBBBBB'
+        start = 10
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3], self.pad[4], self.pad[5]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.prop_header !=  other.prop_header: return False
+        if self.rate !=  other.rate: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'prop_header: \n' 
+        outstr += self.prop_header.show(prefix + '  ')
+        outstr += prefix + 'rate: ' + str(self.rate) + '\n'
+        return outstr
+
+
+class ofp_bucket(object):
+    """Automatically generated Python class for ofp_bucket
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.len = 0
+        self.weight = 0
+        self.watch_port = 0
+        self.watch_group = 0
+        self.pad= [0,0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 4):
+            return (False, "self.pad is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHLL", self.len, self.weight, self.watch_port, self.watch_group)
+        packed += struct.pack("!BBBB", self.pad[0], self.pad[1], self.pad[2], self.pad[3])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 16):
+            return binaryString
+        fmt = '!HHLL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.len, self.weight, self.watch_port, self.watch_group) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 12
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2], self.pad[3]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[16:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 16
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.len !=  other.len: return False
+        if self.weight !=  other.weight: return False
+        if self.watch_port !=  other.watch_port: return False
+        if self.watch_group !=  other.watch_group: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'weight: ' + str(self.weight) + '\n'
+        outstr += prefix + 'watch_port: ' + str(self.watch_port) + '\n'
+        outstr += prefix + 'watch_group: ' + str(self.watch_group) + '\n'
+        return outstr
+
+
+class ofp_switch_features(object):
+    """Automatically generated Python class for ofp_switch_features
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.datapath_id = 0
+        self.n_buffers = 0
+        self.n_tables = 0
+        self.pad= [0,0,0]
+        self.capabilities = 0
+        self.reserved = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!QLB", self.datapath_id, self.n_buffers, self.n_tables)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        packed += struct.pack("!LL", self.capabilities, self.reserved)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 24):
+            return binaryString
+        fmt = '!QLB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.datapath_id, self.n_buffers, self.n_tables) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 13
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!LL'
+        start = 16
+        end = start + struct.calcsize(fmt)
+        (self.capabilities, self.reserved) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[24:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 24
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.datapath_id !=  other.datapath_id: return False
+        if self.n_buffers !=  other.n_buffers: return False
+        if self.n_tables !=  other.n_tables: return False
+        if self.pad !=  other.pad: return False
+        if self.capabilities !=  other.capabilities: return False
+        if self.reserved !=  other.reserved: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'datapath_id: ' + str(self.datapath_id) + '\n'
+        outstr += prefix + 'n_buffers: ' + str(self.n_buffers) + '\n'
+        outstr += prefix + 'n_tables: ' + str(self.n_tables) + '\n'
+        outstr += prefix + 'capabilities: ' + str(self.capabilities) + '\n'
+        outstr += prefix + 'reserved: ' + str(self.reserved) + '\n'
+        return outstr
+
+
+class ofp_action_pop_mpls(object):
+    """Automatically generated Python class for ofp_action_pop_mpls
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.ethertype = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHH", self.type, self.len, self.ethertype)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.ethertype) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 6
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.ethertype !=  other.ethertype: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'ethertype: ' + str(self.ethertype) + '\n'
+        return outstr
+
+
+class ofp_flow_mod(object):
+    """Automatically generated Python class for ofp_flow_mod
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.cookie = 0
+        self.cookie_mask = 0
+        self.table_id = 0
+        self.command = 0
+        self.idle_timeout = 0
+        self.hard_timeout = 0
+        self.priority = 0x8000
+        self.buffer_id = 0
+        self.out_port = 0
+        self.out_group = 0
+        self.flags = 0
+        self.pad= [0,0]
+        self.match = ofp_match()
+        self.match.length = OFP_MATCH_BYTES
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        if(not isinstance(self.match, ofp_match)):
+            return (False, "self.match is not class ofp_match as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!QQBBHHHLLLH", self.cookie, self.cookie_mask, self.table_id, self.command, self.idle_timeout, self.hard_timeout, self.priority, self.buffer_id, self.out_port, self.out_group, self.flags)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        packed += self.match.pack()
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 128):
+            return binaryString
+        fmt = '!QQBBHHHLLLH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.cookie, self.cookie_mask, self.table_id, self.command, self.idle_timeout, self.hard_timeout, self.priority, self.buffer_id, self.out_port, self.out_group, self.flags) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 38
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        self.match.unpack(binaryString[40:])
+        return binaryString[128:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 128
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.cookie !=  other.cookie: return False
+        if self.cookie_mask !=  other.cookie_mask: return False
+        if self.table_id !=  other.table_id: return False
+        if self.command !=  other.command: return False
+        if self.idle_timeout !=  other.idle_timeout: return False
+        if self.hard_timeout !=  other.hard_timeout: return False
+        if self.priority !=  other.priority: return False
+        if self.buffer_id !=  other.buffer_id: return False
+        if self.out_port !=  other.out_port: return False
+        if self.out_group !=  other.out_group: return False
+        if self.flags !=  other.flags: return False
+        if self.pad !=  other.pad: return False
+        if self.match !=  other.match: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'cookie: ' + str(self.cookie) + '\n'
+        outstr += prefix + 'cookie_mask: ' + str(self.cookie_mask) + '\n'
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        outstr += prefix + 'command: ' + str(self.command) + '\n'
+        outstr += prefix + 'idle_timeout: ' + str(self.idle_timeout) + '\n'
+        outstr += prefix + 'hard_timeout: ' + str(self.hard_timeout) + '\n'
+        outstr += prefix + 'priority: ' + str(self.priority) + '\n'
+        outstr += prefix + 'buffer_id: ' + str(self.buffer_id) + '\n'
+        outstr += prefix + 'out_port: ' + str(self.out_port) + '\n'
+        outstr += prefix + 'out_group: ' + str(self.out_group) + '\n'
+        outstr += prefix + 'flags: ' + str(self.flags) + '\n'
+        outstr += prefix + 'match: \n' 
+        outstr += self.match.show(prefix + '  ')
+        return outstr
+
+
+class ofp_packet_out(object):
+    """Automatically generated Python class for ofp_packet_out
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.buffer_id = 4294967295
+        self.in_port = 0
+        self.actions_len = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!LLH", self.buffer_id, self.in_port, self.actions_len)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 12):
+            return binaryString
+        fmt = '!LLH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.buffer_id, self.in_port, self.actions_len) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 10
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[12:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 12
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.buffer_id !=  other.buffer_id: return False
+        if self.in_port !=  other.in_port: return False
+        if self.actions_len !=  other.actions_len: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'buffer_id: ' + str(self.buffer_id) + '\n'
+        outstr += prefix + 'in_port: ' + str(self.in_port) + '\n'
+        outstr += prefix + 'actions_len: ' + str(self.actions_len) + '\n'
+        return outstr
+
+
+class ofp_instruction_goto_table(object):
+    """Automatically generated Python class for ofp_instruction_goto_table
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.table_id = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.table_id)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.table_id) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.table_id !=  other.table_id: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'table_id: ' + str(self.table_id) + '\n'
+        return outstr
+
+
+class ofp_action_nw_addr(object):
+    """Automatically generated Python class for ofp_action_nw_addr
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.nw_addr = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.nw_addr)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.nw_addr) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.nw_addr !=  other.nw_addr: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'nw_addr: ' + str(self.nw_addr) + '\n'
+        return outstr
+
+
+class ofp_action_group(object):
+    """Automatically generated Python class for ofp_action_group
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.group_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHL", self.type, self.len, self.group_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.group_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.group_id !=  other.group_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'group_id: ' + str(self.group_id) + '\n'
+        return outstr
+
+
+class ofp_group_stats(object):
+    """Automatically generated Python class for ofp_group_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.length = 0
+        self.pad= [0,0]
+        self.group_id = 0
+        self.ref_count = 0
+        self.pad2= [0,0,0,0]
+        self.packet_count = 0
+        self.byte_count = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        if(not isinstance(self.pad2, list)):
+            return (False, "self.pad2 is not list as expected.")
+        if(len(self.pad2) != 4):
+            return (False, "self.pad2 is not of size 4 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!H", self.length)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        packed += struct.pack("!LL", self.group_id, self.ref_count)
+        packed += struct.pack("!BBBB", self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3])
+        packed += struct.pack("!QQ", self.packet_count, self.byte_count)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 32):
+            return binaryString
+        fmt = '!H'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.length,) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!BB'
+        start = 2
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!LL'
+        start = 4
+        end = start + struct.calcsize(fmt)
+        (self.group_id, self.ref_count) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBBB'
+        start = 12
+        end = start + struct.calcsize(fmt)
+        (self.pad2[0], self.pad2[1], self.pad2[2], self.pad2[3]) = struct.unpack(fmt, binaryString[start:end])
+        fmt = '!QQ'
+        start = 16
+        end = start + struct.calcsize(fmt)
+        (self.packet_count, self.byte_count) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[32:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 32
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.length !=  other.length: return False
+        if self.pad !=  other.pad: return False
+        if self.group_id !=  other.group_id: return False
+        if self.ref_count !=  other.ref_count: return False
+        if self.pad2 !=  other.pad2: return False
+        if self.packet_count !=  other.packet_count: return False
+        if self.byte_count !=  other.byte_count: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'length: ' + str(self.length) + '\n'
+        outstr += prefix + 'group_id: ' + str(self.group_id) + '\n'
+        outstr += prefix + 'ref_count: ' + str(self.ref_count) + '\n'
+        outstr += prefix + 'packet_count: ' + str(self.packet_count) + '\n'
+        outstr += prefix + 'byte_count: ' + str(self.byte_count) + '\n'
+        return outstr
+
+
+class ofp_action_vlan_pcp(object):
+    """Automatically generated Python class for ofp_action_vlan_pcp
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.vlan_pcp = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.vlan_pcp)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.vlan_pcp) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.vlan_pcp !=  other.vlan_pcp: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'vlan_pcp: ' + str(self.vlan_pcp) + '\n'
+        return outstr
+
+
+class ofp_action_push(object):
+    """Automatically generated Python class for ofp_action_push
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.ethertype = 0
+        self.pad= [0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 2):
+            return (False, "self.pad is not of size 2 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHH", self.type, self.len, self.ethertype)
+        packed += struct.pack("!BB", self.pad[0], self.pad[1])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.ethertype) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BB'
+        start = 6
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.ethertype !=  other.ethertype: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'ethertype: ' + str(self.ethertype) + '\n'
+        return outstr
+
+
+class ofp_group_desc_stats(object):
+    """Automatically generated Python class for ofp_group_desc_stats
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.length = 0
+        self.type = 0
+        self.pad = 0
+        self.group_id = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HBBL", self.length, self.type, self.pad, self.group_id)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HBBL'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.length, self.type, self.pad, self.group_id) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.length !=  other.length: return False
+        if self.type !=  other.type: return False
+        if self.pad !=  other.pad: return False
+        if self.group_id !=  other.group_id: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'length: ' + str(self.length) + '\n'
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'group_id: ' + str(self.group_id) + '\n'
+        return outstr
+
+
+class ofp_error_msg(object):
+    """Automatically generated Python class for ofp_error_msg
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.code = 0
+
+    def __assert(self):
+        """Sanity check
+        """
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HH", self.type, self.code)
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 4):
+            return binaryString
+        fmt = '!HH'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.code) = struct.unpack(fmt,  binaryString[start:end])
+        return binaryString[4:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 4
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.code !=  other.code: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'code: ' + str(self.code) + '\n'
+        return outstr
+
+
+class ofp_action_mpls_ttl(object):
+    """Automatically generated Python class for ofp_action_mpls_ttl
+
+    Date 2013-01-06
+    Created by of.pythonize.pythonizer
+    Core structure: Messages do not include ofp_header
+    Does not include var-length arrays
+    """
+    def __init__(self):
+        """Initialize
+        Declare members and default values
+        """
+        self.type = 0
+        self.len = 0
+        self.mpls_ttl = 0
+        self.pad= [0,0,0]
+
+    def __assert(self):
+        """Sanity check
+        """
+        if(not isinstance(self.pad, list)):
+            return (False, "self.pad is not list as expected.")
+        if(len(self.pad) != 3):
+            return (False, "self.pad is not of size 3 as expected.")
+        return (True, None)
+
+    def pack(self, assertstruct=True):
+        """Pack message
+        Packs empty array used as placeholder
+        """
+        if(assertstruct):
+            if(not self.__assert()[0]):
+                return None
+        packed = ""
+        packed += struct.pack("!HHB", self.type, self.len, self.mpls_ttl)
+        packed += struct.pack("!BBB", self.pad[0], self.pad[1], self.pad[2])
+        return packed
+
+    def unpack(self, binaryString):
+        """Unpack message
+        Do not unpack empty array used as placeholder
+        since they can contain heterogeneous type
+        """
+        if (len(binaryString) < 8):
+            return binaryString
+        fmt = '!HHB'
+        start = 0
+        end = start + struct.calcsize(fmt)
+        (self.type, self.len, self.mpls_ttl) = struct.unpack(fmt,  binaryString[start:end])
+        fmt = '!BBB'
+        start = 5
+        end = start + struct.calcsize(fmt)
+        (self.pad[0], self.pad[1], self.pad[2]) = struct.unpack(fmt, binaryString[start:end])
+        return binaryString[8:]
+
+    def __len__(self):
+        """Return length of message
+        """
+        l = 8
+        return l
+
+    def __eq__(self, other):
+        """Return True if self and other have same values
+        """
+        if type(self) != type(other): return False
+        if self.type !=  other.type: return False
+        if self.len !=  other.len: return False
+        if self.mpls_ttl !=  other.mpls_ttl: return False
+        if self.pad !=  other.pad: return False
+        return True
+
+    def __ne__(self, other): return not self.__eq__(other)
+
+    def show(self, prefix=''):
+        """Generate string showing basic members of structure
+        """
+        outstr = ''
+        outstr += prefix + 'type: ' + str(self.type) + '\n'
+        outstr += prefix + 'len: ' + str(self.len) + '\n'
+        outstr += prefix + 'mpls_ttl: ' + str(self.mpls_ttl) + '\n'
+        return outstr
+
+
+# Enumerated type definitions
+ofp_error_type = ['OFPET_HELLO_FAILED', 'OFPET_BAD_REQUEST', 'OFPET_BAD_ACTION', 'OFPET_FLOW_MOD_FAILED', 'OFPET_GROUP_MOD_FAILED', 'OFPET_PORT_MOD_FAILED', 'OFPET_TABLE_MOD_FAILED', 'OFPET_QUEUE_OP_FAILED', 'OFPET_SWITCH_CONFIG_FAILED']
+OFPET_HELLO_FAILED                  = 0
+OFPET_BAD_REQUEST                   = 1
+OFPET_BAD_ACTION                    = 2
+OFPET_FLOW_MOD_FAILED               = 3
+OFPET_GROUP_MOD_FAILED              = 4
+OFPET_PORT_MOD_FAILED               = 5
+OFPET_TABLE_MOD_FAILED              = 6
+OFPET_QUEUE_OP_FAILED               = 7
+OFPET_SWITCH_CONFIG_FAILED          = 8
+ofp_error_type_map = {
+    0                               : 'OFPET_HELLO_FAILED',
+    1                               : 'OFPET_BAD_REQUEST',
+    2                               : 'OFPET_BAD_ACTION',
+    3                               : 'OFPET_FLOW_MOD_FAILED',
+    4                               : 'OFPET_GROUP_MOD_FAILED',
+    5                               : 'OFPET_PORT_MOD_FAILED',
+    6                               : 'OFPET_TABLE_MOD_FAILED',
+    7                               : 'OFPET_QUEUE_OP_FAILED',
+    8                               : 'OFPET_SWITCH_CONFIG_FAILED'
+}
+
+ofp_flow_mod_flags = ['OFPFF_SEND_FLOW_REM', 'OFPFF_CHECK_OVERLAP']
+OFPFF_SEND_FLOW_REM                 = 1
+OFPFF_CHECK_OVERLAP                 = 2
+ofp_flow_mod_flags_map = {
+    1                               : 'OFPFF_SEND_FLOW_REM',
+    2                               : 'OFPFF_CHECK_OVERLAP'
+}
+
+ofp_stats_reply_flags = ['OFPSF_REPLY_MORE']
+OFPSF_REPLY_MORE                    = 1
+ofp_stats_reply_flags_map = {
+    1                               : 'OFPSF_REPLY_MORE'
+}
+
+ofp_port_no = ['OFPP_MAX', 'OFPP_IN_PORT', 'OFPP_TABLE', 'OFPP_NORMAL', 'OFPP_FLOOD', 'OFPP_ALL', 'OFPP_CONTROLLER', 'OFPP_LOCAL', 'OFPP_ANY']
+OFPP_MAX                            = 4294967040
+OFPP_IN_PORT                        = 4294967288
+OFPP_TABLE                          = 4294967289
+OFPP_NORMAL                         = 4294967290
+OFPP_FLOOD                          = 4294967291
+OFPP_ALL                            = 4294967292
+OFPP_CONTROLLER                     = 4294967293
+OFPP_LOCAL                          = 4294967294
+OFPP_ANY                            = 4294967295
+ofp_port_no_map = {
+    4294967040                      : 'OFPP_MAX',
+    4294967288                      : 'OFPP_IN_PORT',
+    4294967289                      : 'OFPP_TABLE',
+    4294967290                      : 'OFPP_NORMAL',
+    4294967291                      : 'OFPP_FLOOD',
+    4294967292                      : 'OFPP_ALL',
+    4294967293                      : 'OFPP_CONTROLLER',
+    4294967294                      : 'OFPP_LOCAL',
+    4294967295                      : 'OFPP_ANY'
+}
+
+ofp_flow_match_fields = ['OFPFMF_IN_PORT', 'OFPFMF_DL_VLAN', 'OFPFMF_DL_VLAN_PCP', 'OFPFMF_DL_TYPE', 'OFPFMF_NW_TOS', 'OFPFMF_NW_PROTO', 'OFPFMF_TP_SRC', 'OFPFMF_TP_DST', 'OFPFMF_MPLS_LABEL', 'OFPFMF_MPLS_TC', 'OFPFMF_TYPE', 'OFPFMF_DL_SRC', 'OFPFMF_DL_DST', 'OFPFMF_NW_SRC', 'OFPFMF_NW_DST', 'OFPFMF_METADATA']
+OFPFMF_IN_PORT                      = 1
+OFPFMF_DL_VLAN                      = 2
+OFPFMF_DL_VLAN_PCP                  = 4
+OFPFMF_DL_TYPE                      = 8
+OFPFMF_NW_TOS                       = 16
+OFPFMF_NW_PROTO                     = 32
+OFPFMF_TP_SRC                       = 64
+OFPFMF_TP_DST                       = 128
+OFPFMF_MPLS_LABEL                   = 256
+OFPFMF_MPLS_TC                      = 512
+OFPFMF_TYPE                         = 1024
+OFPFMF_DL_SRC                       = 2048
+OFPFMF_DL_DST                       = 4096
+OFPFMF_NW_SRC                       = 8192
+OFPFMF_NW_DST                       = 16384
+OFPFMF_METADATA                     = 32768
+ofp_flow_match_fields_map = {
+    1                               : 'OFPFMF_IN_PORT',
+    2                               : 'OFPFMF_DL_VLAN',
+    4                               : 'OFPFMF_DL_VLAN_PCP',
+    8                               : 'OFPFMF_DL_TYPE',
+    16                              : 'OFPFMF_NW_TOS',
+    32                              : 'OFPFMF_NW_PROTO',
+    64                              : 'OFPFMF_TP_SRC',
+    128                             : 'OFPFMF_TP_DST',
+    256                             : 'OFPFMF_MPLS_LABEL',
+    512                             : 'OFPFMF_MPLS_TC',
+    1024                            : 'OFPFMF_TYPE',
+    2048                            : 'OFPFMF_DL_SRC',
+    4096                            : 'OFPFMF_DL_DST',
+    8192                            : 'OFPFMF_NW_SRC',
+    16384                           : 'OFPFMF_NW_DST',
+    32768                           : 'OFPFMF_METADATA'
+}
+
+ofp_bad_request_code = ['OFPBRC_BAD_VERSION', 'OFPBRC_BAD_TYPE', 'OFPBRC_BAD_STAT', 'OFPBRC_BAD_EXPERIMENTER', 'OFPBRC_BAD_SUBTYPE', 'OFPBRC_EPERM', 'OFPBRC_BAD_LEN', 'OFPBRC_BUFFER_EMPTY', 'OFPBRC_BUFFER_UNKNOWN', 'OFPBRC_BAD_TABLE_ID']
+OFPBRC_BAD_VERSION                  = 0
+OFPBRC_BAD_TYPE                     = 1
+OFPBRC_BAD_STAT                     = 2
+OFPBRC_BAD_EXPERIMENTER             = 3
+OFPBRC_BAD_SUBTYPE                  = 4
+OFPBRC_EPERM                        = 5
+OFPBRC_BAD_LEN                      = 6
+OFPBRC_BUFFER_EMPTY                 = 7
+OFPBRC_BUFFER_UNKNOWN               = 8
+OFPBRC_BAD_TABLE_ID                 = 9
+ofp_bad_request_code_map = {
+    0                               : 'OFPBRC_BAD_VERSION',
+    1                               : 'OFPBRC_BAD_TYPE',
+    2                               : 'OFPBRC_BAD_STAT',
+    3                               : 'OFPBRC_BAD_EXPERIMENTER',
+    4                               : 'OFPBRC_BAD_SUBTYPE',
+    5                               : 'OFPBRC_EPERM',
+    6                               : 'OFPBRC_BAD_LEN',
+    7                               : 'OFPBRC_BUFFER_EMPTY',
+    8                               : 'OFPBRC_BUFFER_UNKNOWN',
+    9                               : 'OFPBRC_BAD_TABLE_ID'
+}
+
+ofp_port_config = ['OFPPC_PORT_DOWN', 'OFPPC_NO_RECV', 'OFPPC_NO_FWD', 'OFPPC_NO_PACKET_IN']
+OFPPC_PORT_DOWN                     = 1
+OFPPC_NO_RECV                       = 4
+OFPPC_NO_FWD                        = 32
+OFPPC_NO_PACKET_IN                  = 64
+ofp_port_config_map = {
+    1                               : 'OFPPC_PORT_DOWN',
+    4                               : 'OFPPC_NO_RECV',
+    32                              : 'OFPPC_NO_FWD',
+    64                              : 'OFPPC_NO_PACKET_IN'
+}
+
+ofp_port_state = ['OFPPS_LINK_DOWN', 'OFPPS_BLOCKED', 'OFPPS_LIVE']
+OFPPS_LINK_DOWN                     = 1
+OFPPS_BLOCKED                       = 2
+OFPPS_LIVE                          = 4
+ofp_port_state_map = {
+    1                               : 'OFPPS_LINK_DOWN',
+    2                               : 'OFPPS_BLOCKED',
+    4                               : 'OFPPS_LIVE'
+}
+
+ofp_config_flags = ['OFPC_FRAG_NORMAL', 'OFPC_FRAG_DROP', 'OFPC_FRAG_REASM', 'OFPC_FRAG_MASK', 'OFPC_INVALID_TTL_TO_CONTROLLER']
+OFPC_FRAG_NORMAL                    = 0
+OFPC_FRAG_DROP                      = 1
+OFPC_FRAG_REASM                     = 2
+OFPC_FRAG_MASK                      = 3
+OFPC_INVALID_TTL_TO_CONTROLLER      = 4
+ofp_config_flags_map = {
+    0                               : 'OFPC_FRAG_NORMAL',
+    1                               : 'OFPC_FRAG_DROP',
+    2                               : 'OFPC_FRAG_REASM',
+    3                               : 'OFPC_FRAG_MASK',
+    4                               : 'OFPC_INVALID_TTL_TO_CONTROLLER'
+}
+
+ofp_switch_config_failed_code = ['OFPSCFC_BAD_FLAGS', 'OFPSCFC_BAD_LEN']
+OFPSCFC_BAD_FLAGS                   = 0
+OFPSCFC_BAD_LEN                     = 1
+ofp_switch_config_failed_code_map = {
+    0                               : 'OFPSCFC_BAD_FLAGS',
+    1                               : 'OFPSCFC_BAD_LEN'
+}
+
+ofp_hello_failed_code = ['OFPHFC_INCOMPATIBLE', 'OFPHFC_EPERM']
+OFPHFC_INCOMPATIBLE                 = 0
+OFPHFC_EPERM                        = 1
+ofp_hello_failed_code_map = {
+    0                               : 'OFPHFC_INCOMPATIBLE',
+    1                               : 'OFPHFC_EPERM'
+}
+
+ofp_capabilities = ['OFPC_FLOW_STATS', 'OFPC_TABLE_STATS', 'OFPC_PORT_STATS', 'OFPC_GROUP_STATS', 'OFPC_IP_REASM', 'OFPC_QUEUE_STATS', 'OFPC_ARP_MATCH_IP']
+OFPC_FLOW_STATS                     = 1
+OFPC_TABLE_STATS                    = 2
+OFPC_PORT_STATS                     = 4
+OFPC_GROUP_STATS                    = 8
+OFPC_IP_REASM                       = 32
+OFPC_QUEUE_STATS                    = 64
+OFPC_ARP_MATCH_IP                   = 128
+ofp_capabilities_map = {
+    1                               : 'OFPC_FLOW_STATS',
+    2                               : 'OFPC_TABLE_STATS',
+    4                               : 'OFPC_PORT_STATS',
+    8                               : 'OFPC_GROUP_STATS',
+    32                              : 'OFPC_IP_REASM',
+    64                              : 'OFPC_QUEUE_STATS',
+    128                             : 'OFPC_ARP_MATCH_IP'
+}
+
+ofp_flow_removed_reason = ['OFPRR_IDLE_TIMEOUT', 'OFPRR_HARD_TIMEOUT', 'OFPRR_DELETE', 'OFPRR_GROUP_DELETE']
+OFPRR_IDLE_TIMEOUT                  = 0
+OFPRR_HARD_TIMEOUT                  = 1
+OFPRR_DELETE                        = 2
+OFPRR_GROUP_DELETE                  = 3
+ofp_flow_removed_reason_map = {
+    0                               : 'OFPRR_IDLE_TIMEOUT',
+    1                               : 'OFPRR_HARD_TIMEOUT',
+    2                               : 'OFPRR_DELETE',
+    3                               : 'OFPRR_GROUP_DELETE'
+}
+
+ofp_table_mod_failed_code = ['OFPTMFC_BAD_TABLE', 'OFPTMFC_BAD_CONFIG']
+OFPTMFC_BAD_TABLE                   = 0
+OFPTMFC_BAD_CONFIG                  = 1
+ofp_table_mod_failed_code_map = {
+    0                               : 'OFPTMFC_BAD_TABLE',
+    1                               : 'OFPTMFC_BAD_CONFIG'
+}
+
+ofp_queue_properties = ['OFPQT_NONE', 'OFPQT_MIN_RATE']
+OFPQT_NONE                          = 0
+OFPQT_MIN_RATE                      = 0
+ofp_queue_properties_map = {
+    0                               : 'OFPQT_NONE',
+    0                               : 'OFPQT_MIN_RATE'
+}
+
+ofp_flow_wildcards = ['OFPFW_IN_PORT', 'OFPFW_DL_VLAN', 'OFPFW_DL_VLAN_PCP', 'OFPFW_DL_TYPE', 'OFPFW_NW_TOS', 'OFPFW_NW_PROTO', 'OFPFW_TP_SRC', 'OFPFW_TP_DST', 'OFPFW_MPLS_LABEL', 'OFPFW_MPLS_TC', 'OFPFW_ALL']
+OFPFW_IN_PORT                       = 1
+OFPFW_DL_VLAN                       = 2
+OFPFW_DL_VLAN_PCP                   = 4
+OFPFW_DL_TYPE                       = 8
+OFPFW_NW_TOS                        = 16
+OFPFW_NW_PROTO                      = 32
+OFPFW_TP_SRC                        = 64
+OFPFW_TP_DST                        = 128
+OFPFW_MPLS_LABEL                    = 256
+OFPFW_MPLS_TC                       = 512
+OFPFW_ALL                           = 1023
+ofp_flow_wildcards_map = {
+    1                               : 'OFPFW_IN_PORT',
+    2                               : 'OFPFW_DL_VLAN',
+    4                               : 'OFPFW_DL_VLAN_PCP',
+    8                               : 'OFPFW_DL_TYPE',
+    16                              : 'OFPFW_NW_TOS',
+    32                              : 'OFPFW_NW_PROTO',
+    64                              : 'OFPFW_TP_SRC',
+    128                             : 'OFPFW_TP_DST',
+    256                             : 'OFPFW_MPLS_LABEL',
+    512                             : 'OFPFW_MPLS_TC',
+    1023                            : 'OFPFW_ALL'
+}
+
+ofp_group = ['OFPG_MAX', 'OFPG_ALL', 'OFPG_ANY']
+OFPG_MAX                            = 4294967040
+OFPG_ALL                            = 4294967292
+OFPG_ANY                            = 4294967295
+ofp_group_map = {
+    4294967040                      : 'OFPG_MAX',
+    4294967292                      : 'OFPG_ALL',
+    4294967295                      : 'OFPG_ANY'
+}
+
+ofp_port_reason = ['OFPPR_ADD', 'OFPPR_DELETE', 'OFPPR_MODIFY']
+OFPPR_ADD                           = 0
+OFPPR_DELETE                        = 1
+OFPPR_MODIFY                        = 2
+ofp_port_reason_map = {
+    0                               : 'OFPPR_ADD',
+    1                               : 'OFPPR_DELETE',
+    2                               : 'OFPPR_MODIFY'
+}
+
+ofp_table_config = ['OFPTC_TABLE_MISS_CONTROLLER', 'OFPTC_TABLE_MISS_CONTINUE', 'OFPTC_TABLE_MISS_DROP', 'OFPTC_TABLE_MISS_MASK']
+OFPTC_TABLE_MISS_CONTROLLER         = 0
+OFPTC_TABLE_MISS_CONTINUE           = 1
+OFPTC_TABLE_MISS_DROP               = 2
+OFPTC_TABLE_MISS_MASK               = 3
+ofp_table_config_map = {
+    0                               : 'OFPTC_TABLE_MISS_CONTROLLER',
+    1                               : 'OFPTC_TABLE_MISS_CONTINUE',
+    2                               : 'OFPTC_TABLE_MISS_DROP',
+    3                               : 'OFPTC_TABLE_MISS_MASK'
+}
+
+ofp_action_type = ['OFPAT_OUTPUT', 'OFPAT_SET_VLAN_VID', 'OFPAT_SET_VLAN_PCP', 'OFPAT_SET_DL_SRC', 'OFPAT_SET_DL_DST', 'OFPAT_SET_NW_SRC', 'OFPAT_SET_NW_DST', 'OFPAT_SET_NW_TOS', 'OFPAT_SET_NW_ECN', 'OFPAT_SET_TP_SRC', 'OFPAT_SET_TP_DST', 'OFPAT_COPY_TTL_OUT', 'OFPAT_COPY_TTL_IN', 'OFPAT_SET_MPLS_LABEL', 'OFPAT_SET_MPLS_TC', 'OFPAT_SET_MPLS_TTL', 'OFPAT_DEC_MPLS_TTL', 'OFPAT_PUSH_VLAN', 'OFPAT_POP_VLAN', 'OFPAT_PUSH_MPLS', 'OFPAT_POP_MPLS', 'OFPAT_SET_QUEUE', 'OFPAT_GROUP', 'OFPAT_SET_NW_TTL', 'OFPAT_DEC_NW_TTL', 'OFPAT_EXPERIMENTER']
+OFPAT_OUTPUT                        = 0
+OFPAT_SET_VLAN_VID                  = 1
+OFPAT_SET_VLAN_PCP                  = 2
+OFPAT_SET_DL_SRC                    = 3
+OFPAT_SET_DL_DST                    = 4
+OFPAT_SET_NW_SRC                    = 5
+OFPAT_SET_NW_DST                    = 6
+OFPAT_SET_NW_TOS                    = 7
+OFPAT_SET_NW_ECN                    = 8
+OFPAT_SET_TP_SRC                    = 9
+OFPAT_SET_TP_DST                    = 10
+OFPAT_COPY_TTL_OUT                  = 11
+OFPAT_COPY_TTL_IN                   = 12
+OFPAT_SET_MPLS_LABEL                = 13
+OFPAT_SET_MPLS_TC                   = 14
+OFPAT_SET_MPLS_TTL                  = 15
+OFPAT_DEC_MPLS_TTL                  = 16
+OFPAT_PUSH_VLAN                     = 17
+OFPAT_POP_VLAN                      = 18
+OFPAT_PUSH_MPLS                     = 19
+OFPAT_POP_MPLS                      = 20
+OFPAT_SET_QUEUE                     = 21
+OFPAT_GROUP                         = 22
+OFPAT_SET_NW_TTL                    = 23
+OFPAT_DEC_NW_TTL                    = 24
+OFPAT_EXPERIMENTER                  = 65535
+ofp_action_type_map = {
+    0                               : 'OFPAT_OUTPUT',
+    1                               : 'OFPAT_SET_VLAN_VID',
+    2                               : 'OFPAT_SET_VLAN_PCP',
+    3                               : 'OFPAT_SET_DL_SRC',
+    4                               : 'OFPAT_SET_DL_DST',
+    5                               : 'OFPAT_SET_NW_SRC',
+    6                               : 'OFPAT_SET_NW_DST',
+    7                               : 'OFPAT_SET_NW_TOS',
+    8                               : 'OFPAT_SET_NW_ECN',
+    9                               : 'OFPAT_SET_TP_SRC',
+    10                              : 'OFPAT_SET_TP_DST',
+    11                              : 'OFPAT_COPY_TTL_OUT',
+    12                              : 'OFPAT_COPY_TTL_IN',
+    13                              : 'OFPAT_SET_MPLS_LABEL',
+    14                              : 'OFPAT_SET_MPLS_TC',
+    15                              : 'OFPAT_SET_MPLS_TTL',
+    16                              : 'OFPAT_DEC_MPLS_TTL',
+    17                              : 'OFPAT_PUSH_VLAN',
+    18                              : 'OFPAT_POP_VLAN',
+    19                              : 'OFPAT_PUSH_MPLS',
+    20                              : 'OFPAT_POP_MPLS',
+    21                              : 'OFPAT_SET_QUEUE',
+    22                              : 'OFPAT_GROUP',
+    23                              : 'OFPAT_SET_NW_TTL',
+    24                              : 'OFPAT_DEC_NW_TTL',
+    65535                           : 'OFPAT_EXPERIMENTER'
+}
+
+ofp_flow_mod_command = ['OFPFC_ADD', 'OFPFC_MODIFY', 'OFPFC_MODIFY_STRICT', 'OFPFC_DELETE', 'OFPFC_DELETE_STRICT']
+OFPFC_ADD                           = 0
+OFPFC_MODIFY                        = 1
+OFPFC_MODIFY_STRICT                 = 2
+OFPFC_DELETE                        = 3
+OFPFC_DELETE_STRICT                 = 4
+ofp_flow_mod_command_map = {
+    0                               : 'OFPFC_ADD',
+    1                               : 'OFPFC_MODIFY',
+    2                               : 'OFPFC_MODIFY_STRICT',
+    3                               : 'OFPFC_DELETE',
+    4                               : 'OFPFC_DELETE_STRICT'
+}
+
+ofp_queue_op_failed_code = ['OFPQOFC_BAD_PORT', 'OFPQOFC_BAD_QUEUE', 'OFPQOFC_EPERM']
+OFPQOFC_BAD_PORT                    = 0
+OFPQOFC_BAD_QUEUE                   = 1
+OFPQOFC_EPERM                       = 2
+ofp_queue_op_failed_code_map = {
+    0                               : 'OFPQOFC_BAD_PORT',
+    1                               : 'OFPQOFC_BAD_QUEUE',
+    2                               : 'OFPQOFC_EPERM'
+}
+
+ofp_match_type = ['OFPMT_STANDARD']
+OFPMT_STANDARD                      = 0
+ofp_match_type_map = {
+    0                               : 'OFPMT_STANDARD'
+}
+
+ofp_vlan_id = ['OFPVID_ANY', 'OFPVID_NONE']
+OFPVID_ANY                          = 65534
+OFPVID_NONE                         = 65535
+ofp_vlan_id_map = {
+    65534                           : 'OFPVID_ANY',
+    65535                           : 'OFPVID_NONE'
+}
+
+ofp_group_mod_failed_code = ['OFPGMFC_GROUP_EXISTS', 'OFPGMFC_INVALID_GROUP', 'OFPGMFC_WEIGHT_UNSUPPORTED', 'OFPGMFC_OUT_OF_GROUPS', 'OFPGMFC_OUT_OF_BUCKETS', 'OFPGMFC_CHAINING_UNSUPPORTED', 'OFPGMFC_WATCH_UNSUPPORTED', 'OFPGMFC_LOOP', 'OFPGMFC_UNKNOWN_GROUP']
+OFPGMFC_GROUP_EXISTS                = 0
+OFPGMFC_INVALID_GROUP               = 1
+OFPGMFC_WEIGHT_UNSUPPORTED          = 2
+OFPGMFC_OUT_OF_GROUPS               = 3
+OFPGMFC_OUT_OF_BUCKETS              = 4
+OFPGMFC_CHAINING_UNSUPPORTED        = 5
+OFPGMFC_WATCH_UNSUPPORTED           = 6
+OFPGMFC_LOOP                        = 7
+OFPGMFC_UNKNOWN_GROUP               = 8
+ofp_group_mod_failed_code_map = {
+    0                               : 'OFPGMFC_GROUP_EXISTS',
+    1                               : 'OFPGMFC_INVALID_GROUP',
+    2                               : 'OFPGMFC_WEIGHT_UNSUPPORTED',
+    3                               : 'OFPGMFC_OUT_OF_GROUPS',
+    4                               : 'OFPGMFC_OUT_OF_BUCKETS',
+    5                               : 'OFPGMFC_CHAINING_UNSUPPORTED',
+    6                               : 'OFPGMFC_WATCH_UNSUPPORTED',
+    7                               : 'OFPGMFC_LOOP',
+    8                               : 'OFPGMFC_UNKNOWN_GROUP'
+}
+
+ofp_group_type = ['OFPGT_ALL', 'OFPGT_SELECT', 'OFPGT_INDIRECT', 'OFPGT_FF']
+OFPGT_ALL                           = 0
+OFPGT_SELECT                        = 1
+OFPGT_INDIRECT                      = 2
+OFPGT_FF                            = 3
+ofp_group_type_map = {
+    0                               : 'OFPGT_ALL',
+    1                               : 'OFPGT_SELECT',
+    2                               : 'OFPGT_INDIRECT',
+    3                               : 'OFPGT_FF'
+}
+
+ofp_instruction_type = ['OFPIT_GOTO_TABLE', 'OFPIT_WRITE_METADATA', 'OFPIT_WRITE_ACTIONS', 'OFPIT_APPLY_ACTIONS', 'OFPIT_CLEAR_ACTIONS', 'OFPIT_EXPERIMENTER']
+OFPIT_GOTO_TABLE                    = 1
+OFPIT_WRITE_METADATA                = 2
+OFPIT_WRITE_ACTIONS                 = 3
+OFPIT_APPLY_ACTIONS                 = 4
+OFPIT_CLEAR_ACTIONS                 = 5
+OFPIT_EXPERIMENTER                  = 65535
+ofp_instruction_type_map = {
+    1                               : 'OFPIT_GOTO_TABLE',
+    2                               : 'OFPIT_WRITE_METADATA',
+    3                               : 'OFPIT_WRITE_ACTIONS',
+    4                               : 'OFPIT_APPLY_ACTIONS',
+    5                               : 'OFPIT_CLEAR_ACTIONS',
+    65535                           : 'OFPIT_EXPERIMENTER'
+}
+
+ofp_bad_action_code = ['OFPBAC_BAD_TYPE', 'OFPBAC_BAD_LEN', 'OFPBAC_BAD_EXPERIMENTER', 'OFPBAC_BAD_EXPERIMENTER_TYPE', 'OFPBAC_BAD_OUT_PORT', 'OFPBAC_BAD_ARGUMENT', 'OFPBAC_EPERM', 'OFPBAC_TOO_MANY', 'OFPBAC_BAD_QUEUE', 'OFPBAC_BAD_OUT_GROUP', 'OFPBAC_MATCH_INCONSISTENT', 'OFPBAC_UNSUPPORTED_ORDER']
+OFPBAC_BAD_TYPE                     = 0
+OFPBAC_BAD_LEN                      = 1
+OFPBAC_BAD_EXPERIMENTER             = 2
+OFPBAC_BAD_EXPERIMENTER_TYPE        = 3
+OFPBAC_BAD_OUT_PORT                 = 4
+OFPBAC_BAD_ARGUMENT                 = 5
+OFPBAC_EPERM                        = 6
+OFPBAC_TOO_MANY                     = 7
+OFPBAC_BAD_QUEUE                    = 8
+OFPBAC_BAD_OUT_GROUP                = 9
+OFPBAC_MATCH_INCONSISTENT           = 10
+OFPBAC_UNSUPPORTED_ORDER            = 11
+ofp_bad_action_code_map = {
+    0                               : 'OFPBAC_BAD_TYPE',
+    1                               : 'OFPBAC_BAD_LEN',
+    2                               : 'OFPBAC_BAD_EXPERIMENTER',
+    3                               : 'OFPBAC_BAD_EXPERIMENTER_TYPE',
+    4                               : 'OFPBAC_BAD_OUT_PORT',
+    5                               : 'OFPBAC_BAD_ARGUMENT',
+    6                               : 'OFPBAC_EPERM',
+    7                               : 'OFPBAC_TOO_MANY',
+    8                               : 'OFPBAC_BAD_QUEUE',
+    9                               : 'OFPBAC_BAD_OUT_GROUP',
+    10                              : 'OFPBAC_MATCH_INCONSISTENT',
+    11                              : 'OFPBAC_UNSUPPORTED_ORDER'
+}
+
+ofp_flow_mod_failed_code = ['OFPFMFC_UNKNOWN', 'OFPFMFC_TABLE_FULL', 'OFPFMFC_BAD_TABLE_ID', 'OFPFMFC_OVERLAP', 'OFPFMFC_EPERM', 'OFPFMFC_BAD_TIMEOUT', 'OFPFMFC_BAD_COMMAND', 'OFPFMFC_BAD_INSTRUCTION', 'OFPFMFC_BAD_MATCH', 'OFPFMFC_BAD_MATCH_TYPE', 'OFPFMFC_BAD_TAG', 'OFPFMFC_BAD_DL_ADDR_MASK', 'OFPFMFC_BAD_NW_ADDR_MASK']
+OFPFMFC_UNKNOWN                     = 0
+OFPFMFC_TABLE_FULL                  = 1
+OFPFMFC_BAD_TABLE_ID                = 2
+OFPFMFC_OVERLAP                     = 3
+OFPFMFC_EPERM                       = 4
+OFPFMFC_BAD_TIMEOUT                 = 5
+OFPFMFC_BAD_COMMAND                 = 6
+OFPFMFC_BAD_INSTRUCTION             = 7
+OFPFMFC_BAD_MATCH                   = 8
+OFPFMFC_BAD_MATCH_TYPE              = 9
+OFPFMFC_BAD_TAG                     = 10
+OFPFMFC_BAD_DL_ADDR_MASK            = 11
+OFPFMFC_BAD_NW_ADDR_MASK            = 12
+ofp_flow_mod_failed_code_map = {
+    0                               : 'OFPFMFC_UNKNOWN',
+    1                               : 'OFPFMFC_TABLE_FULL',
+    2                               : 'OFPFMFC_BAD_TABLE_ID',
+    3                               : 'OFPFMFC_OVERLAP',
+    4                               : 'OFPFMFC_EPERM',
+    5                               : 'OFPFMFC_BAD_TIMEOUT',
+    6                               : 'OFPFMFC_BAD_COMMAND',
+    7                               : 'OFPFMFC_BAD_INSTRUCTION',
+    8                               : 'OFPFMFC_BAD_MATCH',
+    9                               : 'OFPFMFC_BAD_MATCH_TYPE',
+    10                              : 'OFPFMFC_BAD_TAG',
+    11                              : 'OFPFMFC_BAD_DL_ADDR_MASK',
+    12                              : 'OFPFMFC_BAD_NW_ADDR_MASK'
+}
+
+ofp_port_mod_failed_code = ['OFPPMFC_BAD_PORT', 'OFPPMFC_BAD_HW_ADDR', 'OFPPMFC_BAD_CONFIG', 'OFPPMFC_BAD_ADVERTISE']
+OFPPMFC_BAD_PORT                    = 0
+OFPPMFC_BAD_HW_ADDR                 = 1
+OFPPMFC_BAD_CONFIG                  = 2
+OFPPMFC_BAD_ADVERTISE               = 3
+ofp_port_mod_failed_code_map = {
+    0                               : 'OFPPMFC_BAD_PORT',
+    1                               : 'OFPPMFC_BAD_HW_ADDR',
+    2                               : 'OFPPMFC_BAD_CONFIG',
+    3                               : 'OFPPMFC_BAD_ADVERTISE'
+}
+
+ofp_type = ['OFPT_HELLO', 'OFPT_ERROR', 'OFPT_ECHO_REQUEST', 'OFPT_ECHO_REPLY', 'OFPT_EXPERIMENTER', 'OFPT_FEATURES_REQUEST', 'OFPT_FEATURES_REPLY', 'OFPT_GET_CONFIG_REQUEST', 'OFPT_GET_CONFIG_REPLY', 'OFPT_SET_CONFIG', 'OFPT_PACKET_IN', 'OFPT_FLOW_REMOVED', 'OFPT_PORT_STATUS', 'OFPT_PACKET_OUT', 'OFPT_FLOW_MOD', 'OFPT_GROUP_MOD', 'OFPT_PORT_MOD', 'OFPT_TABLE_MOD', 'OFPT_STATS_REQUEST', 'OFPT_STATS_REPLY', 'OFPT_BARRIER_REQUEST', 'OFPT_BARRIER_REPLY', 'OFPT_QUEUE_GET_CONFIG_REQUEST', 'OFPT_QUEUE_GET_CONFIG_REPLY']
+OFPT_HELLO                          = 0
+OFPT_ERROR                          = 1
+OFPT_ECHO_REQUEST                   = 2
+OFPT_ECHO_REPLY                     = 3
+OFPT_EXPERIMENTER                   = 4
+OFPT_FEATURES_REQUEST               = 5
+OFPT_FEATURES_REPLY                 = 6
+OFPT_GET_CONFIG_REQUEST             = 7
+OFPT_GET_CONFIG_REPLY               = 8
+OFPT_SET_CONFIG                     = 9
+OFPT_PACKET_IN                      = 10
+OFPT_FLOW_REMOVED                   = 11
+OFPT_PORT_STATUS                    = 12
+OFPT_PACKET_OUT                     = 13
+OFPT_FLOW_MOD                       = 14
+OFPT_GROUP_MOD                      = 15
+OFPT_PORT_MOD                       = 16
+OFPT_TABLE_MOD                      = 17
+OFPT_STATS_REQUEST                  = 18
+OFPT_STATS_REPLY                    = 19
+OFPT_BARRIER_REQUEST                = 20
+OFPT_BARRIER_REPLY                  = 21
+OFPT_QUEUE_GET_CONFIG_REQUEST       = 22
+OFPT_QUEUE_GET_CONFIG_REPLY         = 23
+ofp_type_map = {
+    0                               : 'OFPT_HELLO',
+    1                               : 'OFPT_ERROR',
+    2                               : 'OFPT_ECHO_REQUEST',
+    3                               : 'OFPT_ECHO_REPLY',
+    4                               : 'OFPT_EXPERIMENTER',
+    5                               : 'OFPT_FEATURES_REQUEST',
+    6                               : 'OFPT_FEATURES_REPLY',
+    7                               : 'OFPT_GET_CONFIG_REQUEST',
+    8                               : 'OFPT_GET_CONFIG_REPLY',
+    9                               : 'OFPT_SET_CONFIG',
+    10                              : 'OFPT_PACKET_IN',
+    11                              : 'OFPT_FLOW_REMOVED',
+    12                              : 'OFPT_PORT_STATUS',
+    13                              : 'OFPT_PACKET_OUT',
+    14                              : 'OFPT_FLOW_MOD',
+    15                              : 'OFPT_GROUP_MOD',
+    16                              : 'OFPT_PORT_MOD',
+    17                              : 'OFPT_TABLE_MOD',
+    18                              : 'OFPT_STATS_REQUEST',
+    19                              : 'OFPT_STATS_REPLY',
+    20                              : 'OFPT_BARRIER_REQUEST',
+    21                              : 'OFPT_BARRIER_REPLY',
+    22                              : 'OFPT_QUEUE_GET_CONFIG_REQUEST',
+    23                              : 'OFPT_QUEUE_GET_CONFIG_REPLY'
+}
+
+ofp_packet_in_reason = ['OFPR_NO_MATCH', 'OFPR_ACTION']
+OFPR_NO_MATCH                       = 0
+OFPR_ACTION                         = 1
+ofp_packet_in_reason_map = {
+    0                               : 'OFPR_NO_MATCH',
+    1                               : 'OFPR_ACTION'
+}
+
+ofp_stats_types = ['OFPST_DESC', 'OFPST_FLOW', 'OFPST_AGGREGATE', 'OFPST_TABLE', 'OFPST_PORT', 'OFPST_QUEUE', 'OFPST_GROUP', 'OFPST_GROUP_DESC', 'OFPST_EXPERIMENTER']
+OFPST_DESC                          = 0
+OFPST_FLOW                          = 1
+OFPST_AGGREGATE                     = 2
+OFPST_TABLE                         = 3
+OFPST_PORT                          = 4
+OFPST_QUEUE                         = 5
+OFPST_GROUP                         = 6
+OFPST_GROUP_DESC                    = 7
+OFPST_EXPERIMENTER                  = 65535
+ofp_stats_types_map = {
+    0                               : 'OFPST_DESC',
+    1                               : 'OFPST_FLOW',
+    2                               : 'OFPST_AGGREGATE',
+    3                               : 'OFPST_TABLE',
+    4                               : 'OFPST_PORT',
+    5                               : 'OFPST_QUEUE',
+    6                               : 'OFPST_GROUP',
+    7                               : 'OFPST_GROUP_DESC',
+    65535                           : 'OFPST_EXPERIMENTER'
+}
+
+ofp_group_mod_command = ['OFPGC_ADD', 'OFPGC_MODIFY', 'OFPGC_DELETE']
+OFPGC_ADD                           = 0
+OFPGC_MODIFY                        = 1
+OFPGC_DELETE                        = 2
+ofp_group_mod_command_map = {
+    0                               : 'OFPGC_ADD',
+    1                               : 'OFPGC_MODIFY',
+    2                               : 'OFPGC_DELETE'
+}
+
+ofp_port_features = ['OFPPF_10MB_HD', 'OFPPF_10MB_FD', 'OFPPF_100MB_HD', 'OFPPF_100MB_FD', 'OFPPF_1GB_HD', 'OFPPF_1GB_FD', 'OFPPF_10GB_FD', 'OFPPF_40GB_FD', 'OFPPF_100GB_FD', 'OFPPF_1TB_FD', 'OFPPF_LUDICROUS', 'OFPPF_COPPER', 'OFPPF_FIBER', 'OFPPF_AUTONEG', 'OFPPF_PAUSE', 'OFPPF_PAUSE_ASYM']
+OFPPF_10MB_HD                       = 1
+OFPPF_10MB_FD                       = 2
+OFPPF_100MB_HD                      = 4
+OFPPF_100MB_FD                      = 8
+OFPPF_1GB_HD                        = 16
+OFPPF_1GB_FD                        = 32
+OFPPF_10GB_FD                       = 64
+OFPPF_40GB_FD                       = 128
+OFPPF_100GB_FD                      = 256
+OFPPF_1TB_FD                        = 512
+OFPPF_LUDICROUS                     = 1024
+OFPPF_COPPER                        = 2048
+OFPPF_FIBER                         = 4096
+OFPPF_AUTONEG                       = 8192
+OFPPF_PAUSE                         = 16384
+OFPPF_PAUSE_ASYM                    = 32768
+ofp_port_features_map = {
+    1                               : 'OFPPF_10MB_HD',
+    2                               : 'OFPPF_10MB_FD',
+    4                               : 'OFPPF_100MB_HD',
+    8                               : 'OFPPF_100MB_FD',
+    16                              : 'OFPPF_1GB_HD',
+    32                              : 'OFPPF_1GB_FD',
+    64                              : 'OFPPF_10GB_FD',
+    128                             : 'OFPPF_40GB_FD',
+    256                             : 'OFPPF_100GB_FD',
+    512                             : 'OFPPF_1TB_FD',
+    1024                            : 'OFPPF_LUDICROUS',
+    2048                            : 'OFPPF_COPPER',
+    4096                            : 'OFPPF_FIBER',
+    8192                            : 'OFPPF_AUTONEG',
+    16384                           : 'OFPPF_PAUSE',
+    32768                           : 'OFPPF_PAUSE_ASYM'
+}
+
+ofp_mpls_label = ['OFPML_ANY', 'OFPML_NONE']
+OFPML_ANY                           = 16777214
+OFPML_NONE                          = 16777215
+ofp_mpls_label_map = {
+    16777214                        : 'OFPML_ANY',
+    16777215                        : 'OFPML_NONE'
+}
+
+# Values from macro definitions
+OFP_FLOW_PERMANENT = 0
+OFP_DL_TYPE_ETH2_CUTOFF = 0x0600
+DESC_STR_LEN = 256
+OFPFW_ICMP_CODE = OFPFW_TP_DST
+OFPQ_MIN_RATE_UNCFG = 0xffff
+OFP_VERSION = 0x02
+OFP_MAX_TABLE_NAME_LEN = 32
+OFP_DL_TYPE_NOT_ETH_TYPE = 0x05ff
+OFP_DEFAULT_MISS_SEND_LEN = 128
+OFP_MAX_PORT_NAME_LEN = 16
+OFP_SSL_PORT = 6633
+OFPMT_STANDARD_LENGTH = 88
+OFPFW_ICMP_TYPE = OFPFW_TP_SRC
+OFP_TCP_PORT = 6633
+SERIAL_NUM_LEN = 32
+OFP_DEFAULT_PRIORITY = 0x8000
+OFP_ETH_ALEN = 6
+OFP_VLAN_NONE = OFPVID_NONE
+OFPQ_ALL = 0xffffffff
+
+# Basic structure size definitions.
+# Does not include ofp_header members.
+# Does not include variable length arrays.
+OFP_ACTION_DL_ADDR_BYTES = 16
+OFP_ACTION_EXPERIMENTER_HEADER_BYTES = 8
+OFP_ACTION_GROUP_BYTES = 8
+OFP_ACTION_HEADER_BYTES = 8
+OFP_ACTION_MPLS_LABEL_BYTES = 8
+OFP_ACTION_MPLS_TC_BYTES = 8
+OFP_ACTION_MPLS_TTL_BYTES = 8
+OFP_ACTION_NW_ADDR_BYTES = 8
+OFP_ACTION_NW_ECN_BYTES = 8
+OFP_ACTION_NW_TOS_BYTES = 8
+OFP_ACTION_NW_TTL_BYTES = 8
+OFP_ACTION_OUTPUT_BYTES = 16
+OFP_ACTION_POP_MPLS_BYTES = 8
+OFP_ACTION_PUSH_BYTES = 8
+OFP_ACTION_SET_QUEUE_BYTES = 8
+OFP_ACTION_TP_PORT_BYTES = 8
+OFP_ACTION_VLAN_PCP_BYTES = 8
+OFP_ACTION_VLAN_VID_BYTES = 8
+OFP_AGGREGATE_STATS_REPLY_BYTES = 24
+OFP_AGGREGATE_STATS_REQUEST_BYTES = 120
+OFP_BUCKET_BYTES = 16
+OFP_BUCKET_COUNTER_BYTES = 16
+OFP_DESC_STATS_BYTES = 1056
+OFP_ERROR_MSG_BYTES = 4
+OFP_EXPERIMENTER_HEADER_BYTES = 4
+OFP_FLOW_MOD_BYTES = 128
+OFP_FLOW_REMOVED_BYTES = 128
+OFP_FLOW_STATS_BYTES = 136
+OFP_FLOW_STATS_REQUEST_BYTES = 120
+OFP_GROUP_DESC_STATS_BYTES = 8
+OFP_GROUP_MOD_BYTES = 8
+OFP_GROUP_STATS_BYTES = 32
+OFP_GROUP_STATS_REQUEST_BYTES = 8
+OFP_HEADER_BYTES = 8
+OFP_HELLO_BYTES = 0
+OFP_INSTRUCTION_BYTES = 8
+OFP_INSTRUCTION_ACTIONS_BYTES = 8
+OFP_INSTRUCTION_EXPERIMENTER_BYTES = 8
+OFP_INSTRUCTION_GOTO_TABLE_BYTES = 8
+OFP_INSTRUCTION_WRITE_METADATA_BYTES = 24
+OFP_MATCH_BYTES = 88
+OFP_PACKET_IN_BYTES = 16
+OFP_PACKET_OUT_BYTES = 12
+OFP_PACKET_QUEUE_BYTES = 8
+OFP_PORT_BYTES = 64
+OFP_PORT_MOD_BYTES = 32
+OFP_PORT_STATS_BYTES = 104
+OFP_PORT_STATS_REQUEST_BYTES = 8
+OFP_PORT_STATUS_BYTES = 72
+OFP_QUEUE_GET_CONFIG_REPLY_BYTES = 8
+OFP_QUEUE_GET_CONFIG_REQUEST_BYTES = 4
+OFP_QUEUE_PROP_HEADER_BYTES = 8
+OFP_QUEUE_PROP_MIN_RATE_BYTES = 16
+OFP_QUEUE_STATS_BYTES = 32
+OFP_QUEUE_STATS_REQUEST_BYTES = 8
+OFP_STATS_REPLY_BYTES = 4
+OFP_STATS_REQUEST_BYTES = 4
+OFP_SWITCH_CONFIG_BYTES = 4
+OFP_SWITCH_FEATURES_BYTES = 24
+OFP_TABLE_MOD_BYTES = 8
+OFP_TABLE_STATS_BYTES = 88
+