diff --git a/Fabric/Utilities/src/python/oftest/oft12/__init__.py b/Fabric/Utilities/src/python/oftest/oft12/__init__.py
new file mode 100644
index 0000000..d4e8062
--- /dev/null
+++ b/Fabric/Utilities/src/python/oftest/oft12/__init__.py
@@ -0,0 +1,16 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
diff --git a/Fabric/Utilities/src/python/oftest/oft12/packet.py b/Fabric/Utilities/src/python/oftest/oft12/packet.py
new file mode 100644
index 0000000..55724d6
--- /dev/null
+++ b/Fabric/Utilities/src/python/oftest/oft12/packet.py
@@ -0,0 +1,1315 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+######################################################################
+#
+# All files associated with the OpenFlow Python Test (oftest) are
+# made available for public use and benefit with the expectation
+# that others will use, modify and enhance the Software and contribute
+# those enhancements back to the community. However, since we would
+# like to make the Software available for broadest use, with as few
+# restrictions as possible permission is hereby granted, free of
+# charge, to any person obtaining a copy of this Software to deal in
+# the Software under the copyrights without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject
+# to the following conditions:
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# 
+######################################################################
+import os
+
+"""
+OpenFlow packet class
+
+This class implements the basic abstraction of an OpenFlow packet.  It
+includes parsing functionality and OpenFlow actions related to 
+packet modifications.
+"""
+
+import socket
+import struct
+import logging
+import ofp
+import unittest
+import binascii
+import string
+import collections #@UnresolvedImport
+
+ETHERTYPE_IP = 0x0800
+ETHERTYPE_VLAN = 0x8100
+ETHERTYPE_VLAN_QinQ = 0x88a8
+ETHERTYPE_ARP = 0x0806
+ETHERTYPE_MPLS = 0x8847
+ETHERTYPE_MPLS_MCAST = 0x8848
+ETHERTYPES_MPLS = [ETHERTYPE_MPLS, ETHERTYPE_MPLS_MCAST]
+
+DL_MASK_ALL = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
+NW_MASK_ALL = 0xffffffff
+
+MPLS_BOTTOM_OF_STACK = 0x00000100
+
+# Sigh.. not python26
+#MplsTag = collections.namedtuple("MplsTag", "label tc ttl")
+
+class MplsTag(object):
+    def __init__(self, label, tc, ttl):
+        self.label = label
+        self.tc = tc
+        self.ttl = ttl
+    def pack(self, bos = 0):
+        packed_tag = ((self.label & 0xfffff) << 12) | \
+                     ((self.tc & 0x7) << 9) | \
+                     (self.ttl & 0xFF) | \
+                     (MPLS_BOTTOM_OF_STACK if bos else 0)
+        return packed_tag
+    
+    def unpack(packed_tag):
+        tag = MplsTag(packed_tag >> 12,
+                      (packed_tag >> 9) & 0x0007,
+                      packed_tag & 0xFF)
+        bos = bool(packed_tag & MPLS_BOTTOM_OF_STACK)
+        return (tag, bos)
+    unpack = staticmethod(unpack)
+
+class Packet(object):
+    """
+    Packet abstraction
+
+    This is meant to support the abstraction of a packet in an
+    OpenFlow 1.1 switch so it includes an action set, ingress port,
+    and metadata.  These members may be ignored and the rest of the
+    packet parsing and modification functions used to manipulate
+    a packet.
+    """
+    
+    icmp_counter = 1
+
+    def __init__(self, in_port=None, data=""):
+        # Use entries in match when possible.
+        self.in_port = in_port
+        self.data = data
+        self.bytes = len(data)
+        self.match = ofp.ofp_match()
+        self.logger = logging.getLogger("packet")  
+        self.instructions = []
+        # parsable tags
+        self.ip_header_offset = None
+        self.tcp_header_offset = None
+        self.mpls_tag_offset = None         # pointer to outer mpls tag
+        self.vlan_tag_offset = None         # pointer to outer vlan tag
+        self.action_set = {}
+        self.queue_id = 0
+
+        if self.data != "":
+            self.parse()
+
+    def show(self):
+        """ Return a ascii hex representation of the packet's data"""
+        ret = ""
+        c = 0
+        for b in list(self.data):
+            if c != 0:
+                if c % 16  == 0:
+                    ret += '\n'
+                elif c % 8 == 0:
+                    ret += '  '
+            c += 1
+            ret += "%0.2x " % struct.unpack('B', b)
+        return ret
+
+    def __repr__(self):
+        return self.data
+    
+    def __str__(self):
+        return  self.__repr__()
+
+    def __len__(self):
+        return len(self.data)
+
+    def simple_tcp_packet(self,
+                          pktlen=100, 
+                          dl_dst='00:01:02:03:04:05',
+                          dl_src='00:06:07:08:09:0a',
+                          dl_vlan_enable=False,
+                          dl_vlan_type=ETHERTYPE_VLAN,
+                          dl_vlan=0,
+                          dl_vlan_pcp=0,
+                          dl_vlan_cfi=0,
+                          mpls_type=None,
+                          mpls_tags=None,
+                          ip_src='192.168.0.1',
+                          ip_dst='192.168.0.2',
+                          ip_tos=0,
+                          ip_ttl=64,
+                          tcp_sport=1234,
+                          tcp_dport=80):
+        """
+        Return a simple dataplane TCP packet
+
+        Supports a few parameters:
+        @param len Length of packet in bytes w/o CRC
+        @param dl_dst Destinatino MAC
+        @param dl_src Source MAC
+        @param dl_vlan_enable True if the packet is with vlan, False otherwise
+        @param dl_vlan_type Ether type for VLAN
+        @param dl_vlan VLAN ID
+        @param dl_vlan_pcp VLAN priority
+        @param ip_src IP source
+        @param ip_dst IP destination
+        @param ip_tos IP ToS
+        @param tcp_dport TCP destination port
+        @param tcp_sport TCP source port
+
+        Generates a simple TCP request.  Users shouldn't assume anything 
+        about this packet other than that it is a valid ethernet/IP/TCP frame.
+        """
+        self.data = ""
+        self._make_ip_packet(dl_dst, dl_src, dl_vlan_enable, dl_vlan_type, 
+                             dl_vlan, dl_vlan_pcp, dl_vlan_cfi, 
+                             mpls_type, mpls_tags, 
+                             ip_tos, ip_ttl, ip_src, ip_dst, socket.IPPROTO_TCP)
+
+        # Add TCP header
+        self.data += struct.pack("!HHLLBBHHH",
+                                 tcp_sport,
+                                 tcp_dport,
+                                 1,     # tcp.seq
+                                 0,     # tcp.ack
+                                 0x50,  # tcp.doff + tcp.res1
+                                 0x12,  # tcp.syn + tcp.ack
+                                 0,     # tcp.wnd
+                                 0,     # tcp.check
+                                 0,     # tcp.urgent pointer
+                                 )
+
+        # Fill out packet
+        self.data += "D" * (pktlen - len(self.data))
+        return self
+    
+    def simple_icmp_packet(self,
+                          pktlen=100, 
+                          dl_dst='00:01:02:03:04:05',
+                          dl_src='00:06:07:08:09:0a',
+                          dl_vlan_enable=False,
+                          dl_vlan_type=ETHERTYPE_VLAN,
+                          dl_vlan=0,
+                          dl_vlan_pcp=0,
+                          dl_vlan_cfi=0,
+                          mpls_type=None,
+                          mpls_tags=None,
+                          ip_src='192.168.0.1',
+                          ip_dst='192.168.0.2',
+                          ip_tos=0,
+                          ip_ttl=64,
+                          icmp_type=8, # ICMP_ECHO_REQUEST
+                          icmp_code=0, 
+                          ):
+        """
+        Return a simple dataplane ICMP packet
+
+        Supports a few parameters:
+        @param len Length of packet in bytes w/o CRC
+        @param dl_dst Destinatino MAC
+        @param dl_src Source MAC
+        @param dl_vlan_enable True if the packet is with vlan, False otherwise
+        @param dl_vlan_type Ether type for VLAN
+        @param dl_vlan VLAN ID
+        @param dl_vlan_pcp VLAN priority
+        @param ip_src IP source
+        @param ip_dst IP destination
+        @param ip_tos IP ToS
+        @param tcp_dport TCP destination port
+        @param ip_sport TCP source port
+
+        Generates a simple TCP request.  Users shouldn't assume anything 
+        about this packet other than that it is a valid ethernet/IP/TCP frame.
+        """
+        self.data = ""
+        self._make_ip_packet(dl_dst, dl_src, dl_vlan_enable, dl_vlan_type, 
+                             dl_vlan, dl_vlan_pcp, dl_vlan_cfi, 
+                             mpls_type, mpls_tags,
+                             ip_tos,
+                              ip_ttl, ip_src, ip_dst, socket.IPPROTO_ICMP)
+
+        # Add ICMP header
+        self.data += struct.pack("!BBHHH",
+                                 icmp_type,
+                                 icmp_code,
+                                 0,  # icmp.checksum
+                                 os.getpid() & 0xffff,  # icmp.echo.id
+                                 Packet.icmp_counter   # icmp.echo.seq
+                                 )                  
+        Packet.icmp_counter += 1       
+
+        # Fill out packet
+        self.data += "D" * (pktlen - len(self.data))
+
+        return self
+
+    def _make_ip_packet(self, dl_dst, dl_src, dl_vlan_enable, dl_vlan_type, 
+                          dl_vlan, dl_vlan_pcp, dl_vlan_cfi, mpls_type, mpls_tags,
+                          ip_tos, ip_ttl, ip_src, ip_dst, ip_proto):
+        self.data = ""
+        addr = dl_dst.split(":")
+        for byte in map(lambda z: int(z, 16), addr):
+            self.data += struct.pack("!B", byte)
+        addr = dl_src.split(":")
+        for byte in map(lambda z: int(z, 16), addr):
+            self.data += struct.pack("!B", byte)
+
+        if (dl_vlan_enable):
+            # Form and add VLAN tag
+            self.data += struct.pack("!H", dl_vlan_type)
+            vtag = (dl_vlan & 0x0fff) | \
+                            (dl_vlan_pcp & 0x7) << 13 | \
+                            (dl_vlan_cfi & 0x1) << 12
+            self.data += struct.pack("!H", vtag)
+            
+        if mpls_tags:
+            # Add type/len field
+            self.data += struct.pack("!H", mpls_type)
+            mpls_tags = list(mpls_tags)          
+            while len(mpls_tags):
+                tag = mpls_tags.pop(0)
+                packed_tag = tag.pack(bos = not len(mpls_tags))
+                self.data += struct.pack("!I", packed_tag)
+            
+        else:
+            # Add type/len field
+            self.data += struct.pack("!H", ETHERTYPE_IP)
+
+        # Add IP header
+        v_and_hlen = 0x45  # assumes no ip or tcp options
+        ip_len = 120 + 40  # assumes no ip or tcp options
+        self.data += struct.pack("!BBHHHBBH", v_and_hlen, ip_tos, ip_len, 
+                                 0, # ip.id 
+                                 0, # ip.frag_off
+                                 ip_ttl, # ip.ttl
+                                 ip_proto,
+                                 0)  # ip.checksum
+        # convert  ipsrc/dst to ints
+        self.data += struct.pack("!LL", ascii_ip_to_bin(ip_src), 
+                                 ascii_ip_to_bin(ip_dst))
+
+    def length(self):
+        return len(self.data)
+
+    def clear_actions(self):
+        self.action_set = {}
+
+    def parse(self):
+        """
+        Update the headers in self.match based on self.data 
+        
+        Parses the relevant header features out of the packet, using
+        the table outlined in the OF1.1 spec, Figure 4
+        """
+        self.bytes = len(self.data)
+        self.match.in_port = self.in_port
+        self.match.type = ofp.OFPMT_STANDARD
+        self.match.length = ofp.OFPMT_STANDARD_LENGTH
+        self.match.wildcards = 0
+        self.match.nw_dst_mask = 0
+        self.match.nw_dst_mask = 0
+        self.match.dl_dst_mask = [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
+        self.match.dl_src_mask = [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
+        self.mpls_tag_offset = None
+        self.ip_header_offset = None
+        
+        idx = 0
+        try:
+            idx = self._parse_l2(idx)
+            
+            if self.match.dl_type == ETHERTYPE_IP:
+                self.ip_header_offset = idx 
+                idx = self._parse_ip(idx)
+                if self.match.nw_proto in [ socket.IPPROTO_TCP,
+                                            socket.IPPROTO_UDP,
+                                            socket.IPPROTO_ICMP]:
+                    self.tcp_header_offset = idx
+                    if self.match.nw_proto != socket.IPPROTO_ICMP:
+                        idx = self._parse_l4(idx)
+                    else:
+                        idx = self._parse_icmp(idx)
+            elif self.match.dl_type == ETHERTYPE_ARP:
+                self._parse_arp(idx)
+        except (parse_error), e:
+            self.logger.warn("Giving up on parsing packet, got %s" % 
+                             (str(e)))
+            return None
+        return self.match
+
+    def _parse_arp(self, idx):
+        # @todo Implement
+        pass
+
+    def _parse_l2(self, idx):
+        """
+        Parse Layer2 Headers of packet
+        
+        Parse ether src,dst,type (and vlan and QinQ headers if exists) from 
+        self.data starting at idx
+        """
+        if self.bytes < 14 :
+            raise parse_error("_parse_l2:: packet too shorter <14 bytes")
+            
+        self.match.dl_dst = list(struct.unpack("!6B", self.data[idx:idx+6]))
+        self.match.dl_dst_mask = DL_MASK_ALL
+        idx += 6
+        self.match.dl_src = list(struct.unpack("!6B", self.data[idx:idx+6]))
+        self.match.dl_src_mask = DL_MASK_ALL
+        idx += 6
+        #pdb.set_trace()
+        l2_type = struct.unpack("!H", self.data[idx:idx+2])[0]
+        idx += 2
+        if l2_type in [ETHERTYPE_VLAN, ETHERTYPE_VLAN_QinQ] :
+            self.vlan_tag_offset = 12
+            blob = struct.unpack("!H", self.data[idx:idx+2])[0]
+            idx += 2
+            self.match.dl_vlan_pcp = (blob & 0xe000) >> 13
+            #cfi = blob & 0x1000     #@todo figure out what to do if cfi!=0
+            self.match.dl_vlan = blob & 0x0fff
+            l2_type = struct.unpack("!H", self.data[idx:idx+2])[0]
+            # now skip past any more nest VLAN tags (per the spec)
+            while l2_type in [ETHERTYPE_VLAN, ETHERTYPE_VLAN_QinQ] :
+                idx += 4
+                if self.bytes < idx :
+                    raise parse_error("_parse_l2(): Too many vlan tags")
+                l2_type = struct.unpack("!H", self.data[idx:idx+2])[0]
+            idx += 2
+        else:
+            self.vlan_tag_offset = None
+            self.match.dl_vlan = ofp.OFPVID_NONE
+            self.match.dl_vlan_pcp = 0
+            
+        if l2_type in ETHERTYPES_MPLS:
+            if self.bytes < (idx + 4):
+                raise parse_error("_parse_l2:  Invalid MPLS header")
+            self.mpls_tag_offset = idx
+            tag = struct.unpack("!I", self.data[idx:idx+4])[0]
+            self.match.mpls_label = tag >> 12
+            self.match.mpls_tc = (tag >> 9) & 0x0007
+            idx += 4
+        else:
+            self.match.mpls_label = 0
+            self.match.mpls_tc = 0
+            
+        self.match.dl_type = l2_type
+        return idx
+            
+    def _parse_ip(self, idx):
+        """
+        Parse IP Headers of a packet starting at self.data[idx]
+        """
+        if self.bytes < (idx + 20) :
+            raise parse_error("_parse_ip: Invalid IP header")
+        # the three blanks are id (2bytes), frag offset (2bytes), 
+        # and ttl (1byte)
+        (hlen_and_v, self.match.nw_tos, len, _,_,_, self.match.nw_proto) = \
+            struct.unpack("!BBHHHBB", self.data[idx:idx+10])
+        #@todo add fragmentation parsing
+        hlen = hlen_and_v & 0x0f
+        (self.match.nw_src, self.match.nw_dst) = \
+            struct.unpack("!II", self.data[idx + 12:idx+20])
+        self.match.nw_dst_mask = NW_MASK_ALL
+        self.match.nw_src_mask = NW_MASK_ALL
+        return idx + (hlen *4) # this should correctly skip IP options
+    
+    def _parse_l4(self, idx):
+        """
+        Parse the src/dst ports of UDP and TCP packets
+        """
+        if self.bytes < (idx + 8):
+            raise parse_error("_parse_l4: Invalid L4 header")
+        (self.match.tp_src, self.match.tp_dst) = \
+            struct.unpack("!HH", self.data[idx:idx+4])
+
+    def _parse_icmp(self, idx):
+        """
+        Parse the type/code of ICMP Packets 
+        """
+        if self.bytes < (idx + 4):
+            raise parse_error("_parse_icmp: Invalid icmp header")
+        # yes, type and code get stored into tp_dst and tp_src...
+        (self.match.tp_src, self.match.tp_dst) = \
+            struct.unpack("!BB", self.data[idx:idx+2])
+
+
+    #
+    # NOTE:  See comment string in write_action regarding exactly
+    # when actions are executed (for apply vs write instructions)
+    #
+
+    def write_action(self, action):
+        """
+        Write the action into the packet's action set
+
+        Note that we do nothing to the packet when the write_action
+        instruction is executed.  We only record the actions for 
+        later processing.  Because of this, the output port is not
+        explicitly recorded in the packet; that state is recorded
+        in the action_set[set_output] item.
+        """
+        self.action_set[action.__class__] = action
+
+    def _set_1bytes(self,offset,byte):
+        """ Writes the byte at data[offset] 
+        
+        This function only exists to match the other _set_Xbytes() and
+        is trivial
+    
+        """
+        tmp= "%s%s" % (self.data[0:offset], 
+                               struct.pack('B',byte & 0xff))
+        if len(self.data) > offset + 1 :
+            tmp += self.data[offset+1:len(self.data)]
+        self.data=tmp
+
+    def _set_2bytes(self,offset,short):
+        """ Writes the 2 byte short in network byte order at data[offset] """
+        tmp= "%s%s" % (self.data[0:offset], 
+                               struct.pack('!H',short & 0xffff))
+        if len(self.data) > offset + 2 :
+            tmp += self.data[offset+2:len(self.data)]
+        self.data=tmp
+
+    def _set_4bytes(self,offset,word,forceNBO=True):
+        """ Writes the 4 byte word at data[offset] 
+        
+        Use network byte order if forceNBO is True,
+        else it's assumed that word is already in NBO
+        
+        """
+        # @todo Verify byte order
+        #pdb.set_trace()
+        fmt ="L"
+        if forceNBO:
+            fmt = '!' + fmt 
+        
+        tmp= "%s%s" % (self.data[0:offset], 
+                               struct.pack(fmt,word & 0xffffffff))
+        if len(self.data) > offset + 4 :
+            tmp += self.data[offset+4:len(self.data)]
+        self.data=tmp
+        
+    def _set_6bytes(self,offset,byte_list):
+        """ Writes the 6 byte sequence in the given order to data[offset] """
+        # @todo Do as a slice
+        tmp= self.data[0:offset] 
+        tmp += struct.pack("BBBBBB", *byte_list)
+        if len(self.data) > offset + 6 :
+            tmp += self.data[offset+6:len(self.data)]
+        self.data=tmp
+    
+    def _update_l4_checksum(self):
+        """ Recalculate the L4 checksum, if there
+        
+        Can be safely called on non-tcp/non-udp packets as a NOOP
+        """
+        if (self.ip_header_offset is None or 
+            self.tcp_header_offset is None):
+            return
+        if self.match.nw_proto == socket.IPPROTO_TCP:
+            return self._update_tcp_checksum()
+        elif self.match.nw_proto == socket.IPPROTO_UDP:
+            return self._update_udp_checksum()
+        
+    def _update_tcp_checksum(self):
+        """ Recalculate the TCP checksum
+        
+        @warning:  Must only be called on actual TCP Packets
+        """
+        #@todo implemnt tcp checksum update
+        pass
+    
+    def _update_udp_checksum(self):
+        """ Recalculate the TCP checksum
+        
+        @warning:  Must only be called on actual TCP Packets
+        """
+        #@todo implemnt udp checksum update
+        pass
+
+    def set_metadata(self, value, mask):
+        self.match.metadata = (self.match.metadata & ~mask) | \
+            (value & mask)
+
+    #
+    # These are the main action operations that take the 
+    # required parameters
+    # 
+    # Note that 'group', 'experimenter' and 'set_output' are only 
+    # implemented for the action versions.
+
+    def set_queue(self, queue_id):
+        self.queue_id = queue_id
+
+    def set_vlan_vid(self, vid):
+        # @todo Verify proper location of VLAN id
+        if self.vlan_tag_offset is None:
+            self.logger.debug("set_vlan_vid(): Adding new vlan tag to untagged packet")
+            self.push_vlan(ETHERTYPE_VLAN)
+        offset = self.vlan_tag_offset + 2
+        short = struct.unpack('!H', self.data[offset:offset+2])[0]
+        short = (short & 0xf000) | ((vid & 0x0fff) )
+        self.data = self.data[0:offset] + struct.pack('!H',short) + \
+                self.data[offset+2:len(self.data)]
+        self.match.dl_vlan = vid & 0x0fff
+        self.logger.debug("set_vlan_vid(): setting packet vlan_vid to 0x%x " % 
+                          self.match.dl_vlan)
+
+    def set_vlan_pcp(self, pcp):
+        # @todo Verify proper location of VLAN pcp
+        if self.vlan_tag_offset is None:
+            return
+        offset = self.vlan_tag_offset + 2
+        short = struct.unpack('!H', self.data[offset:offset+2])[0]
+        short = (pcp<<13 & 0xf000) | ((short & 0x0fff) )
+        self.data = self.data[0:offset] + struct.pack('!H',short) + \
+                self.data[offset+2:len(self.data)]
+        self.match.dl_vlan_pcp = pcp & 0xf
+
+    def set_dl_src(self, dl_src):
+        self._set_6bytes(6, dl_src)
+        self.match.dl_src = dl_src
+
+    def set_dl_dst(self, dl_dst):
+        self._set_6bytes(0, dl_dst)
+        self.match.dl_dst = dl_dst
+        
+    def set_nw_src(self, nw_src):
+        if self.ip_header_offset is None:
+            return
+        self._set_4bytes(self.ip_header_offset + 12, nw_src)
+        self._update_l4_checksum()
+        self.match.nw_src = nw_src
+    
+    def set_nw_dst(self, nw_dst):
+        # @todo Verify byte order
+        if self.ip_header_offset is None:
+            return
+        self._set_4bytes(self.ip_header_offset + 16, nw_dst)
+        self._update_l4_checksum()
+        self.match.nw_dst = nw_dst
+
+    def set_nw_tos(self, tos):
+        if self.ip_header_offset is None:
+            return
+        self._set_1bytes(self.ip_header_offset + 1, tos)
+        self.match.nw_tos = tos
+
+    def set_nw_ecn(self, ecn):
+        #@todo look up ecn implementation details
+        pass
+
+    def set_tp_src(self, tp_src):
+        if self.tcp_header_offset is None:
+            return
+        if (self.match.nw_proto == socket.IPPROTO_TCP or
+            self.match.nw_proto == socket.IPPROTO_UDP): 
+            self._set_2bytes(self.tcp_header_offset, tp_src)
+        elif (self.match.nw_proto == socket.IPPROTO_ICMP):
+            self._set_1bytes(self.tcp_header_offset, tp_src)
+        self._update_l4_checksum()
+        self.match.tp_src = tp_src
+            
+    def set_tp_dst(self, tp_dst):
+        if self.tcp_header_offset is None:
+            return
+        if (self.match.nw_proto == socket.IPPROTO_TCP or
+            self.match.nw_proto == socket.IPPROTO_UDP): 
+            self._set_2bytes(self.tcp_header_offset +2, tp_dst)
+        elif (self.match.nw_proto == socket.IPPROTO_ICMP):
+            self._set_1bytes(self.tcp_header_offset + 1, tp_dst)
+        self._update_l4_checksum()
+        self.match.tp_dst = tp_dst
+
+    IP_OFFSET_TTL = 8
+    
+    def copy_ttl_out(self):
+        if self.mpls_tag_offset is None:
+            # No MPLS tag.
+            return
+        outerTag = struct.unpack("!I", self.data[self.mpls_tag_offset:
+                                                 self.mpls_tag_offset+4])[0]
+        if not (outerTag & MPLS_BOTTOM_OF_STACK):
+            # Payload is another MPLS tag:
+            innerTag = struct.unpack("!I", self.data[self.mpls_tag_offset+4:
+                                                     self.mpls_tag_offset+8])[0]
+            outerTag = (outerTag & 0xFFFFFF00) | (innerTag & 0x000000FF)
+            self._set_4bytes(self.mpls_tag_offset, outerTag)
+        else:
+            # This MPLS tag is the bottom of the stack.
+            # See if the payload looks like it might be IPv4.
+            versionLen = struct.unpack("B", 
+                                       self.data[self.mpls_tag_offset+4])[0]
+            if versionLen >> 4 != 4:
+                # This is not IPv4.
+                return;
+            # This looks like IPv4, so copy the TTL.
+            ipTTL = struct.unpack("B", self.data[self.mpls_tag_offset + 4 +
+                                                 Packet.IP_OFFSET_TTL])[0]
+            outerTag = (outerTag & 0xFFFFFF00) | (ipTTL & 0xFF)
+            self._set_4bytes(self.mpls_tag_offset, outerTag)      
+            return
+
+    def copy_ttl_in(self):
+        if self.mpls_tag_offset is None:
+            # No MPLS tag.
+            return
+        outerTag = struct.unpack("!I", self.data[self.mpls_tag_offset:
+                                                 self.mpls_tag_offset+4])[0]
+        if not (outerTag & MPLS_BOTTOM_OF_STACK):
+            # Payload is another MPLS tag:
+            innerTag = struct.unpack("!I", self.data[self.mpls_tag_offset+4:
+                                                     self.mpls_tag_offset+8])[0]
+            innerTag = (innerTag & 0xFFFFFF00) | (outerTag & 0x000000FF)
+            self._set_4bytes(self.mpls_tag_offset+4, innerTag)
+        else:
+            # This MPLS tag is the bottom of the stack.
+            # See if the payload looks like it might be IPv4.
+            versionLen = struct.unpack("B", self.data[self.mpls_tag_offset+4])[0]
+            if versionLen >> 4 != 4:
+                # This is not IPv4.
+                return;
+            # This looks like IPv4, so copy the TTL.
+            self._set_1bytes(self.mpls_tag_offset + 4 + Packet.IP_OFFSET_TTL,
+                             outerTag & 0x000000FF) 
+            #@todo update checksum
+            return
+
+    def set_mpls_label(self, mpls_label):
+        if self.mpls_tag_offset is None:
+            return
+        tag = struct.unpack("!I", self.data[self.mpls_tag_offset:
+                                            self.mpls_tag_offset+4])[0]
+        tag = ((mpls_label & 0xfffff) << 12) | (tag & 0x00000fff)
+        self.match.mpls_label = mpls_label
+        self._set_4bytes(self.mpls_tag_offset, tag)
+
+    def set_mpls_tc(self, mpls_tc):
+        if self.mpls_tag_offset is None:
+            return
+        tag = struct.unpack("!I", self.data[self.mpls_tag_offset:
+                                            self.mpls_tag_offset+4])[0]
+        tag = ((mpls_tc & 0x7) << 9) | (tag & 0xfffff1ff)
+        self.match.mpls_tc = mpls_tc
+        self._set_4bytes(self.mpls_tag_offset, tag)
+
+    def set_mpls_ttl(self, ttl):
+        if self.mpls_tag_offset is None:
+            return   
+        self._set_1bytes(self.mpls_tag_offset + 3, ttl)
+
+    def dec_mpls_ttl(self):
+        if self.mpls_tag_offset is None:
+            return
+        ttl = struct.unpack("B", self.data[self.mpls_tag_offset + 3])[0]
+        self.set_mpls_ttl(ttl - 1)
+
+    def push_vlan(self, ethertype):
+        if len(self) < 14: 
+            self.logger.error("NOT Pushing a new VLAN tag: packet too short!")
+            pass    # invalid ethernet frame, can't add vlan tag
+
+        # from 4.8.1 of the spec, default values are zero
+        # on a push operation if no VLAN tag already exists
+        l2_type = struct.unpack("!H", self.data[12:14])[0]
+        if ((l2_type == ETHERTYPE_VLAN) or (l2_type == ETHERTYPE_VLAN_QinQ)):
+            current_tag = struct.unpack("!H", self.data[14:16])[0]
+        else:
+            current_tag = 0
+        new_tag = struct.pack('!HH',
+                                  # one of 0x8100 or x88a8
+                                  # could check to enforce this?
+                                  ethertype & 0xffff,
+                                  current_tag
+                                  )
+        self.data = self.data[0:12] + new_tag + self.data[12:len(self.data)]  
+        self.parse()
+
+    def pop_vlan(self):
+        if self.vlan_tag_offset is None:
+            pass
+        self.data = self.data[0:12] + self.data[16:len(self.data)]
+        self.parse()
+
+    def push_mpls(self, ethertype):
+        tag = MplsTag(0, 0, 0)
+        bos = False
+        
+        if self.mpls_tag_offset:
+            # The new tag defaults to the old one.
+            packed_tag = struct.unpack("!I", self.data[self.mpls_tag_offset:
+                                                       self.mpls_tag_offset+4])[0]
+            (tag, _) = MplsTag.unpack(packed_tag)
+            
+        else:
+            # Pushing a new label stack, set the BoS bit and get TTL from IP.
+            bos = True
+            if self.ip_header_offset:
+                ttl = struct.unpack("B", self.data[self.ip_header_offset + \
+                                                       Packet.IP_OFFSET_TTL])[0]
+                tag = MplsTag(0, 0, ttl)
+                                                       
+        self.data = self.data[0:14] + \
+                    struct.pack("!I", tag.pack(bos)) + \
+                    self.data[14:]
+        self._set_2bytes(12, ethertype)   
+        # Reparse to update offsets, ethertype, etc.
+        self.parse()
+            
+    def pop_mpls(self, ethertype):
+        # Ignore if no existing tags.
+        if self.mpls_tag_offset:
+            self.data = self.data[0:self.mpls_tag_offset] + \
+                        self.data[self.mpls_tag_offset + 4:]
+            self._set_2bytes(12, ethertype)
+            
+            # Reparse to update offsets, ethertype, etc.
+            self.parse()
+    
+    def set_nw_ttl(self, ttl):
+        if self.ip_header_offset is None:
+            return
+        self._set_1bytes(self.ip_header_offset + Packet.IP_OFFSET_TTL, ttl)
+        self._update_l4_checksum()
+        # don't need to update self.match; no ttl in it
+
+    def dec_nw_ttl(self):
+        if self.ip_header_offset is None:
+            return
+        offset = self.ip_header_offset + Packet.IP_OFFSET_TTL
+        old_ttl = struct.unpack("b",self.data[offset:offset + 1])[0]
+        self.set_nw_ttl( old_ttl - 1)
+
+    #
+    # All action functions need to take the action object for params
+    # These take an action object to facilitate the switch implementation
+    #
+
+    def action_output(self, action, switch):
+        if action.port < ofp.OFPP_MAX:
+            switch.dataplane.send(action.port, self.data, 
+                                  queue_id=self.queue_id)
+        elif action.port == ofp.OFPP_ALL:
+            for of_port in switch.ports.iterkeys():
+                if of_port != self.in_port: 
+                    switch.dataplane.send(of_port, self.data, 
+                                          queue_id=self.queue_id)
+        elif action.port == ofp.OFPP_IN_PORT:
+            switch.dataplane.send(self.in_port, self.data, 
+                                  queue_id=self.queue_id)
+        else:
+            switch.logger.error("NEED to implement action_output" + 
+                                " for port %d" % action.port)        
+
+    def action_set_queue(self, action, switch):
+        self.set_queue(action.queue_id)
+
+    def action_set_vlan_vid(self, action, switch):
+        self.set_vlan_vid(action.vlan_vid)
+
+    def action_set_vlan_pcp(self, action, switch):
+        self.set_vlan_pcp(action.vlan_pcp)
+
+    def action_set_dl_src(self, action, switch):
+        self.set_dl_src(action.dl_addr)
+
+    def action_set_dl_dst(self, action, switch):
+        self.set_dl_dst(action.dl_addr)
+
+    def action_set_nw_src(self, action, switch):
+        self.set_nw_src(action.nw_addr)
+
+    def action_set_nw_dst(self, action, switch):
+        self.set_nw_dst(action.nw_addr)
+
+    def action_set_nw_tos(self, action, switch):
+        self.set_nw_tos(action.nw_tos)
+
+    def action_set_nw_ecn(self, action, switch):
+        self.set_nw_ecn(action.nw_ecn)
+
+    def action_set_tp_src(self, action, switch):
+        self.set_tp_src(action.tp_port)
+
+    def action_set_tp_dst(self, action, switch):
+        self.set_tp_dst(action.tp_port)
+
+    def action_copy_ttl_out(self, action, switch):
+        self.copy_ttl_out()
+
+    def action_copy_ttl_in(self, action, switch):
+        self.copy_ttl_in()
+
+    def action_set_mpls_label(self, action, switch):
+        self.set_mpls_label(action.mpls_label)
+
+    def action_set_mpls_tc(self, action, switch):
+        self.set_mpls_tc(action.mpls_tc)
+
+    def action_set_mpls_ttl(self, action, switch):
+        self.set_mpls_ttl(action.mpls_ttl)
+
+    def action_dec_mpls_ttl(self, action, switch):
+        self.dec_mpls_ttl()
+
+    def action_push_vlan(self, action, switch):
+        self.push_vlan(action.ethertype)
+
+    def action_pop_vlan(self, action, switch):
+        self.pop_vlan()
+
+    def action_push_mpls(self, action, switch):
+        self.push_mpls(action.ethertype)
+
+    def action_pop_mpls(self, action, switch):
+        self.pop_mpls(action.ethertype)
+    
+    def action_experimenter(self, action, switch):
+        pass
+
+    def action_set_nw_ttl(self, action, switch):
+        self.set_nw_ttl(action.nw_ttl)
+
+    def action_dec_nw_ttl(self, action, switch):
+        self.dec_nw_ttl()
+
+    def action_group(self, action, switch):
+        pass
+
+    def execute_action_set(self, switch):
+        """
+        Execute the actions in the action set for the packet
+        according to the order given in ordered_action_list.
+
+        This determines the order in which
+        actions in the packet's action set are executed
+
+        @param switch The parent switch object (for sending pkts out)
+
+        @todo Verify the ordering in this list
+        """
+        cls = action.action_copy_ttl_in
+        if cls in self.action_set.keys():
+            self.logger.debug("Action copy_ttl_in")
+            self.action_copy_ttl_in(self.action_set[cls], switch)
+
+        cls = action.action_pop_mpls
+        if cls in self.action_set.keys():
+            self.logger.debug("Action pop_mpls")
+            self.action_pop_mpls(self.action_set[cls], switch)
+        cls = action.action_pop_vlan
+        if cls in self.action_set.keys():
+            self.logger.debug("Action pop_vlan")
+            self.action_pop_vlan(self.action_set[cls], switch)
+        cls = action.action_push_mpls
+        if cls in self.action_set.keys():
+            self.logger.debug("Action push_mpls")
+            self.action_push_mpls(self.action_set[cls], switch)
+        cls = action.action_push_vlan
+        if cls in self.action_set.keys():
+            self.logger.debug("Action push_vlan")
+            self.action_push_vlan(self.action_set[cls], switch)
+
+        cls = action.action_dec_mpls_ttl
+        if cls in self.action_set.keys():
+            self.logger.debug("Action dec_mpls_ttl")
+            self.action_dec_mpls_ttl(self.action_set[cls], switch)
+        cls = action.action_dec_nw_ttl
+        if cls in self.action_set.keys():
+            self.logger.debug("Action dec_nw_ttl")
+            self.action_dec_nw_ttl(self.action_set[cls], switch)
+        cls = action.action_copy_ttl_out
+        if cls in self.action_set.keys():
+            self.logger.debug("Action copy_ttl_out")
+            self.action_copy_ttl_out(self.action_set[cls], switch)
+
+        cls = action.action_set_dl_dst
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_dl_dst")
+            self.action_set_dl_dst(self.action_set[cls], switch)
+        cls = action.action_set_dl_src
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_dl_src")
+            self.action_set_dl_src(self.action_set[cls], switch)
+        cls = action.action_set_mpls_label
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_mpls_label")
+            self.action_set_mpls_label(self.action_set[cls], switch)
+        cls = action.action_set_mpls_tc
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_mpls_tc")
+            self.action_set_mpls_tc(self.action_set[cls], switch)
+        cls = action.action_set_mpls_ttl
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_mpls_ttl")
+            self.action_set_mpls_ttl(self.action_set[cls], switch)
+        cls = action.action_set_nw_dst
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_nw_dst")
+            self.action_set_nw_dst(self.action_set[cls], switch)
+        cls = action.action_set_nw_ecn
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_nw_ecn")
+            self.action_set_nw_ecn(self.action_set[cls], switch)
+        cls = action.action_set_nw_src
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_nw_src")
+            self.action_set_nw_src(self.action_set[cls], switch)
+        cls = action.action_set_nw_tos
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_nw_tos")
+            self.action_set_nw_tos(self.action_set[cls], switch)
+        cls = action.action_set_nw_ttl
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_nw_ttl")
+            self.action_set_nw_ttl(self.action_set[cls], switch)
+        cls = action.action_set_queue
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_queue")
+            self.action_set_queue(self.action_set[cls], switch)
+        cls = action.action_set_tp_dst
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_tp_dst")
+            self.action_set_tp_dst(self.action_set[cls], switch)
+        cls = action.action_set_tp_src
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_tp_src")
+            self.action_set_tp_src(self.action_set[cls], switch)
+        cls = action.action_set_vlan_pcp
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_vlan_pcp")
+            self.action_set_vlan_pcp(self.action_set[cls], switch)
+        cls = action.action_set_vlan_vid
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_vlan_vid")
+            self.action_set_vlan_vid(self.action_set[cls], switch)
+
+        cls = action.action_group
+        if cls in self.action_set.keys():
+            self.logger.debug("Action group")
+            self.action_group(self.action_set[cls], switch)
+        cls = action.action_experimenter
+        if cls in self.action_set.keys():
+            self.logger.debug("Action experimenter")
+            self.action_experimenter(self.action_set[cls], switch)
+        cls = action.action_output
+        if cls in self.action_set.keys():
+            self.logger.debug("Action set_output")
+            self.action_output(self.action_set[cls], switch)
+
+
+def ascii_ip_to_bin(ip):
+        """ Take '192.168.0.1' and return the NBO decimal equivalent 0xc0a80101 """
+        #Lookup the cleaner, one-line way of doing this
+        # or if there isn't just a library (!?)
+        s = ip.split('.')
+        return struct.unpack("!L", struct.pack("BBBB", int(s[0]), 
+                                               int(s[1]), 
+                                               int(s[2]), 
+                                               int(s[3]) ))[0]
+    
+
+class parse_error(Exception):
+    """
+    Thrown internally if there is an error in packet parsing
+    """
+    
+    def __init__(self, why):
+        self.why = why
+        
+    def __str__(self):
+        return "%s:: %s" % (super.__str__(self), self.why)
+        
+class packet_test(unittest.TestCase):
+    """
+    Unit tests for packet class
+    """
+    
+    def ascii_to_data(self, str):
+        return binascii.unhexlify(str.translate(string.maketrans('',''),
+                                                string.whitespace))
+    
+    def setUp(self):
+        """
+        Simple packet data for parsing tests.  
+
+        Ethernet II, Src: Fujitsu_ef:cd:8d (00:17:42:ef:cd:8d), 
+            Dst: ZhsZeitm_5d:24:00 (00:d0:05:5d:24:00)
+        Internet Protocol, Src: 172.24.74.96 (172.24.74.96), 
+            Dst: 171.64.74.58 (171.64.74.58)
+        Transmission Control Protocol, Src Port: 59581 (59581), 
+            Dst Port: ssh (22), Seq: 2694, Ack: 2749, Len: 48
+        """
+        pktdata = self.ascii_to_data(
+            """00 d0 05 5d 24 00 00 17 42 ef cd 8d 08 00 45 10
+               00 64 65 67 40 00 40 06 e9 29 ac 18 4a 60 ab 40
+               4a 3a e8 bd 00 16 7c 28 2f 88 f2 bd 7a 03 80 18
+               00 b5 ec 49 00 00 01 01 08 0a 00 d1 46 8b 32 ed
+               7c 88 78 4b 8a dc 0a 1f c4 d3 02 a3 ae 1d 3c aa
+               6f 1a 36 9f 27 11 12 71 5b 5d 88 f2 97 fa e7 f9
+               99 c1 9f 9c 7f c5 1e 3e 45 c6 a6 ac ec 0b 87 64
+               98 dd""")
+        self.pkt = Packet(data=pktdata)
+        
+        """
+        MPLS packet data for MPLS parsing tests.  
+
+        Ethernet II, Src: Fujitsu_ef:cd:8d (00:17:42:ef:cd:8d), 
+            Dst: ZhsZeitm_5d:24:00 (00:d0:05:5d:24:00)
+        MPLS, Label: 0xFEFEF, TC: 5, S: 1, TTL: 0xAA
+        Internet Protocol, Src: 172.24.74.96 (172.24.74.96), 
+            Dst: 171.64.74.58 (171.64.74.58)
+        Transmission Control Protocol, Src Port: 59581 (59581), 
+            Dst Port: ssh (22), Seq: 2694, Ack: 2749, Len: 48
+        """
+        mplspktdata = self.ascii_to_data(
+            """00 d0 05 5d 24 00 00 17 42 ef cd 8d 88 47
+               FE FE FB AA
+               45 10 00 64 65 67 40 00 40 06 e9 29 ac 18 4a 60 
+               ab 40 4a 3a 
+               e8 bd 00 16 7c 28 2f 88 f2 bd 7a 03 80 18
+               00 b5 ec 49 00 00 01 01 08 0a 00 d1 46 8b 32 ed
+               7c 88 78 4b 8a dc 0a 1f c4 d3 02 a3 ae 1d 3c aa
+               6f 1a 36 9f 27 11 12 71 5b 5d 88 f2 97 fa e7 f9
+               99 c1 9f 9c 7f c5 1e 3e 45 c6 a6 ac ec 0b 87 64
+               98 dd""")
+        self.mplspkt = Packet(data=mplspktdata)
+
+    def runTest(self):
+        self.assertTrue(self.pkt)
+        
+class l2_parsing_test(packet_test):
+    def runTest(self):
+        match = self.pkt.match
+        self.assertEqual(match.dl_dst,[0x00,0xd0,0x05,0x5d,0x24,0x00])
+        self.assertEqual(match.dl_src,[0x00,0x17,0x42,0xef,0xcd,0x8d])
+        self.assertEqual(match.dl_type,ETHERTYPE_IP)
+        
+class mpls_parsing_test(packet_test):
+    def runTest(self):
+        match = self.mplspkt.match
+        self.assertEqual(match.mpls_label, 0xFEFEF)
+        self.assertEqual(match.mpls_tc, 5)
+
+class ip_parsing_test(packet_test):
+    def runTest(self):
+        match = self.pkt.match
+        # @todo Verify byte ordering of the following
+        self.assertEqual(match.nw_dst,ascii_ip_to_bin('171.64.74.58'))
+        self.assertEqual(match.nw_src,ascii_ip_to_bin('172.24.74.96'))
+        self.assertEqual(match.nw_proto, socket.IPPROTO_TCP)
+
+class mpls_setting_test(packet_test):
+    def runTest(self):
+        orig_len = len(self.mplspkt)
+        label = 0x12345
+        tc = 6
+        ttl = 0x78
+        self.mplspkt.set_mpls_label(label)
+        self.mplspkt.set_mpls_tc(tc)
+        self.mplspkt.set_mpls_ttl(ttl)
+        self.mplspkt.dec_mpls_ttl()
+        self.mplspkt.parse()
+        
+        self.assertEqual(len(self.mplspkt), orig_len)
+        self.assertTrue(self.mplspkt.mpls_tag_offset)
+        match = self.mplspkt.match
+        
+        self.assertEqual(match.mpls_label, label)
+        self.assertEqual(match.mpls_tc, tc)
+        new_ttl = struct.unpack("B", self.mplspkt.data[self.mplspkt.mpls_tag_offset + 3:
+                                                       self.mplspkt.mpls_tag_offset + 4])[0]
+        self.assertEqual(new_ttl, ttl - 1)
+
+class mpls_pop_test(packet_test):
+    def runTest(self):
+        orig_len = len(self.mplspkt)
+        self.mplspkt.pop_mpls(ETHERTYPE_IP)
+        self.mplspkt.parse()
+        
+        self.assertEqual(len(self.mplspkt), orig_len - 4)
+        self.assertFalse(self.mplspkt.mpls_tag_offset)
+        match = self.mplspkt.match
+        
+        self.assertEqual(match.dl_type,ETHERTYPE_IP)
+        self.assertEqual(match.nw_dst,ascii_ip_to_bin('171.64.74.58'))
+        self.assertEqual(match.nw_src,ascii_ip_to_bin('172.24.74.96'))
+        self.assertEqual(match.nw_proto, socket.IPPROTO_TCP)
+        
+class mpls_push_test(packet_test):
+    def runTest(self):
+        orig_len = len(self.pkt)
+        self.pkt.push_mpls(ETHERTYPE_MPLS)
+        self.pkt.parse()
+        
+        self.assertEqual(len(self.pkt), orig_len + 4)
+        self.assertTrue(self.pkt.mpls_tag_offset)
+        match = self.pkt.match
+        
+        self.assertEqual(match.dl_type, ETHERTYPE_MPLS)
+        self.assertEqual(match.mpls_label, 0)
+        self.assertEqual(match.mpls_tc, 0)
+
+class ip_setting_test(packet_test):
+    def runTest(self):
+        orig_len = len(self.pkt)
+        ip1 = '11.22.33.44'
+        ip2 = '55.66.77.88'
+        self.pkt.set_nw_src(ascii_ip_to_bin(ip1))
+        self.pkt.set_nw_dst(ascii_ip_to_bin(ip2))
+        self.pkt.parse()
+        self.assertEqual(len(self.pkt), orig_len)
+        match = self.pkt.match
+        
+        # @todo Verify byte ordering of the following
+        self.assertEqual(match.nw_src,ascii_ip_to_bin(ip1))
+        self.assertEqual(match.nw_dst,ascii_ip_to_bin(ip2))
+        
+
+
+
+class l4_parsing_test(packet_test):
+    def runTest(self):
+        match = self.pkt.match
+        self.assertEqual(match.tp_dst,22)
+        self.assertEqual(match.tp_src,59581)
+
+class l4_setting_test(packet_test):
+    def runTest(self):
+        orig_len = len(self.pkt)
+        self.pkt.set_tp_src(777)
+        self.pkt.set_tp_dst(666)
+        self.pkt.parse()
+        self.assertEqual(len(self.pkt), orig_len)
+        match = self.pkt.match
+        self.assertEqual(match.tp_src,777)
+        self.assertEqual(match.tp_dst,666)
+        
+class simple_tcp_test(unittest.TestCase):
+    """ Make sure that simple_tcp_test does what it should 
+                          pktlen=100, 
+                          dl_dst='00:01:02:03:04:05',
+                          dl_src='00:06:07:08:09:0a',
+                          dl_vlan_enable=False,
+                          dl_vlan=0,
+                          dl_vlan_pcp=0,
+                          dl_vlan_cfi=0,
+                          ip_src='192.168.0.1',
+                          ip_dst='192.168.0.2',
+                          ip_tos=0,
+                          tcp_sport=1234,
+                          tcp_dport=80):
+    """
+    def setUp(self):
+        self.pkt = Packet().simple_tcp_packet()
+        self.pkt.parse()
+        logging.basicConfig(filename="", level=logging.DEBUG)
+        self.logger = logging.getLogger('unittest')
+       
+    def runTest(self):
+        match = self.pkt.match
+        self.assertEqual(match.dl_dst, [0x00, 0x01, 0x02, 0x03, 0x04, 0x05])
+        self.assertEqual(match.dl_src, [0x00, 0x06, 0x07, 0x08, 0x09, 0x0a])
+        self.assertEqual(match.dl_type, ETHERTYPE_IP)
+        self.assertEqual(match.nw_src, ascii_ip_to_bin('192.168.0.1'))
+        self.assertEqual(match.nw_dst, ascii_ip_to_bin('192.168.0.2'))
+        self.assertEqual(match.tp_dst, 80)
+        self.assertEqual(match.tp_src, 1234)
+
+class simple_vlan_test(simple_tcp_test):
+    """ Make sure that simple_tcp_test does what it should with vlans 
+                         
+    """    
+       
+    def runTest(self):
+        self.pkt = Packet().simple_tcp_packet(dl_vlan_enable=True,dl_vlan=0x0abc)
+        self.pkt.parse()
+        match = self.pkt.match
+        #self.logger.debug("Packet=\n%s" % self.pkt.show())
+        self.assertEqual(match.dl_dst, [0x00, 0x01, 0x02, 0x03, 0x04, 0x05])
+        self.assertEqual(match.dl_src, [0x00, 0x06, 0x07, 0x08, 0x09, 0x0a])
+        self.assertEqual(match.dl_type, ETHERTYPE_IP)
+        self.assertEqual(match.nw_src, ascii_ip_to_bin('192.168.0.1'))
+        self.assertEqual(match.nw_dst, ascii_ip_to_bin('192.168.0.2'))
+        self.assertEqual(match.tp_dst, 80)
+        self.assertEqual(match.tp_src, 1234)
+        self.assertEqual(match.dl_vlan, 0xabc)
+        
+class vlan_mod(simple_tcp_test):
+    """ Start with a packet with no vlan, add one, change it, remove it"""
+    def runTest(self):
+        old_len = len(self.pkt)
+        match = self.pkt.match
+        self.assertEqual(match.dl_vlan, 0xffff)
+        self.assertEqual(len(self.pkt), old_len)
+        #self.logger.debug("PKT=\n" + self.pkt.show())
+        self.pkt.push_vlan(ETHERTYPE_VLAN) # implicitly pushes vid=0
+        self.assertEqual(len(self.pkt), old_len + 4)
+        self.assertEqual(match.dl_vlan, 0)
+        #self.logger.debug("PKT=\n" + self.pkt.show())
+        self.assertEqual(match.dl_type,ETHERTYPE_IP)
+        self.pkt.set_vlan_vid(0xbabe)
+        self.assertEqual(match.dl_vlan, 0x0abe)
+
+class simple_tcp_with_mpls_test(unittest.TestCase):
+    """ Make sure that simple_tcp_packet does what it should 
+                          pktlen=100, 
+                          dl_dst='00:01:02:03:04:05',
+                          dl_src='00:06:07:08:09:0a',
+                          dl_vlan_enable=False,
+                          dl_vlan=0,
+                          dl_vlan_pcp=0,
+                          dl_vlan_cfi=0,
+                          ip_src='192.168.0.1',
+                          ip_dst='192.168.0.2',
+                          ip_tos=0,
+                          tcp_sport=1234,
+                          tcp_dport=80):
+    """
+    def setUp(self):
+        tag1 = MplsTag(0xabcde, 0x5, 0xAA)
+        tag2 = MplsTag(0x54321, 0x2, 0xBB)
+        mpls_tags = (tag1, tag2)        
+        
+        self.pkt = Packet().simple_tcp_packet(mpls_type=ETHERTYPE_MPLS,
+                                              mpls_tags=mpls_tags)
+        self.pkt.parse()
+       
+    def runTest(self):
+        match = self.pkt.match
+        self.assertEqual(match.dl_dst, [0x00, 0x01, 0x02, 0x03, 0x04, 0x05])
+        self.assertEqual(match.dl_src, [0x00, 0x06, 0x07, 0x08, 0x09, 0x0a])
+        self.assertEqual(match.dl_type, ETHERTYPE_MPLS)
+        self.assertEqual(match.mpls_label, 0xabcde)
+        self.assertEqual(match.mpls_tc, 0x5)
+
+if __name__ == '__main__':
+    print("Running packet tests\n")
+    unittest.main()
+
diff --git a/Fabric/Utilities/src/python/oftest/oft12/testutils.py b/Fabric/Utilities/src/python/oftest/oft12/testutils.py
new file mode 100644
index 0000000..3ce2e75
--- /dev/null
+++ b/Fabric/Utilities/src/python/oftest/oft12/testutils.py
@@ -0,0 +1,1518 @@
+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+
+import sys
+import logging
+from cStringIO import StringIO
+#import types
+
+import ofp
+import oftest.parse as parse
+from packet import Packet
+
+try:
+    logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
+    from scapy.all import *
+    from oftest.mpls import *
+except ImportError:
+    sys.exit("Need to install scapy for packet parsing")
+
+global skipped_test_count
+skipped_test_count = 0
+
+# Some useful defines
+IP_ETHERTYPE = 0x800
+IPV6_ETHERTYPE = 0x86dd
+ETHERTYPE_VLAN = 0x8100
+ETHERTYPE_MPLS = 0x8847
+TCP_PROTOCOL = 0x6
+UDP_PROTOCOL = 0x11
+ICMPV6_PROTOCOL = 0x3a
+
+
+
+def clear_switch(parent, port_list, logger):
+    """
+    Clear the switch configuration
+
+    @param parent Object implementing controller and assert equal
+    @param logger Logging object
+    """
+    parent.assertTrue(len(port_list) > 2, "Not enough ports for test")
+    for port in port_list:
+        clear_port_config(parent, port, logger)
+    initialize_table_config(parent.controller, logger)
+    delete_all_flows(parent.controller, logger)
+    delete_all_groups(parent.controller, logger)
+
+    return port_list
+
+def initialize_table_config(ctrl, logger):
+    """
+    Initialize all table configs to default setting ("CONTROLLER")
+    @param ctrl The controller object for the test
+    """
+    logger.info("Initializing all table configs")
+    request = ofp.message.table_mod()  
+    request.config = ofp.OFPTC_TABLE_MISS_CONTROLLER
+    rv = 0
+    for table_id in [0, 1, 2, 3, 4, 5, 6, 7]:
+        request.table_id = table_id
+        rv |= ctrl.message_send(request)
+    return rv
+
+def delete_all_flows(ctrl, logger):
+    """
+    Delete all flows on the switch
+    @param ctrl The controller object for the test
+    @param logger Logging object
+    """
+
+    logger.info("Deleting all flows")
+    #DEFAULT_TABLE_COUNT = 4
+    return delete_all_flows_one_table(ctrl, logger, table_id=0xff)
+
+def delete_all_flows_one_table(ctrl, logger, table_id=0):
+    """
+    Delete all flows on a table
+    @param ctrl The controller object for the test
+    @param logger Logging object
+    @param table_id Table ID
+    """
+    logger.info("Deleting all flows on table ID: " + str(table_id))
+    msg = ofp.message.flow_delete()
+    msg.out_port = ofp.OFPP_ANY
+    msg.out_group = ofp.OFPG_ANY
+    msg.buffer_id = 0xffffffff
+    msg.table_id = table_id
+    logger.debug(msg.show())
+
+    return ctrl.message_send(msg)
+
+def delete_all_groups(ctrl, logger):
+    """
+    Delete all groups on the switch
+    @param ctrl The controller object for the test
+    @param logger Logging object
+    """
+    
+    logger.info("Deleting all groups")
+    msg = ofp.message.group_mod()
+    msg.group_id = ofp.OFPG_ALL
+    msg.command = ofp.OFPGC_DELETE
+    logger.debug(msg.show())
+    return ctrl.message_send(msg)
+
+def clear_port_config(parent, port, logger):
+    """
+    Clear the port configuration 
+
+    @param parent Object implementing controller and assert equal
+    @param logger Logging object
+    """
+    rv = port_config_set(parent.controller, port,
+                         0, 0, logger)
+    parent.assertEqual(rv, 0, "Failed to reset port config")
+
+def simple_tcp_packet(dl_dst='00:01:02:03:04:05',
+                      dl_src='00:06:07:08:09:0a',
+                      vlan_tags=[],  # {type,vid,pcp,cfi}  TODO type
+                      mpls_tags=[],  # {type,label,tc,ttl} TODO type 
+                      ip_src='192.168.0.1',
+                      ip_dst='192.168.0.2',
+                      ip_tos=0,
+                      ip_ttl=64,
+                      tcp_sport=1234,
+                      tcp_dport=80,
+                      payload_len = 46):
+    pkt = Ether(dst=dl_dst, src=dl_src)
+
+    vlans_num = 0
+    while len(vlan_tags):
+        tag = vlan_tags.pop(0)
+        dot1q = Dot1Q()
+        if 'vid' in tag:
+            dot1q.vlan = tag['vid']
+        if 'pcp' in tag:
+            dot1q.prio = tag['pcp']
+        if 'cfi' in tag:
+            dot1q.id = tag['cfi']
+        pkt = pkt / dot1q 
+        if 'type' in tag:
+            if vlans_num == 0:
+                pkt[Ether].setfieldval('type', tag['type'])
+            else:
+                pkt[Dot1Q:vlans_num].setfieldval('type', tag['type'])
+        vlans_num+=1
+
+    mplss_num = 0
+    while len(mpls_tags):
+        tag = mpls_tags.pop(0)
+        mpls = MPLS()
+        if 'label' in tag:
+            mpls.label = tag['label']
+        if 'tc' in tag:
+            mpls.cos = tag['tc']
+        if 'ttl' in tag:
+            mpls.ttl = tag['ttl']
+        pkt = pkt / mpls
+        if 'type' in tag:
+            if mplss_num == 0:
+                if vlans_num == 0:
+                    pkt[Ether].setfieldval('type', tag['type'])
+                else:
+                    pkt[Dot1Q:vlans_num].setfieldval('type', tag['type'])
+        mplss_num+=1
+
+    pkt = pkt / IP(src=ip_src, dst=ip_dst, tos=ip_tos, ttl=ip_ttl) \
+              / TCP(sport=tcp_sport, dport=tcp_dport)
+    
+    pkt = pkt / ("D" * payload_len)
+
+    return pkt
+
+def simple_icmp_packet(dl_dst='00:01:02:03:04:05',
+                       dl_src='00:06:07:08:09:0a',
+                       vlan_tags=[],  # {type,vid,pcp,cfi}  TODO type
+                       mpls_tags=[],  # {type,label,tc,ttl} TODO type 
+                       ip_src='192.168.0.1',
+                       ip_dst='192.168.0.2',
+                       ip_tos=0,
+                       ip_ttl=64,
+                       icmp_type=8, # ICMP_ECHO_REQUEST
+                       icmp_code=0,
+                       payload_len=0):
+
+    #TODO simple_ip_packet
+    pkt = Ether(dst=dl_dst, src=dl_src)
+
+    vlans_num = 0
+    while len(vlan_tags):
+        tag = vlan_tags.pop(0)
+        dot1q = Dot1Q()
+        if 'vid' in tag:
+            dot1q.vlan = tag['vid']
+        if 'pcp' in tag:
+            dot1q.prio = tag['pcp']
+        if 'cfi' in tag:
+            dot1q.id = tag['cfi']
+        pkt = pkt / dot1q 
+        if 'type' in tag:
+            if vlans_num == 0:
+                pkt[Ether].setfieldval('type', tag['type'])
+            else:
+                pkt[Dot1Q:vlans_num].setfieldval('type', tag['type'])
+        vlans_num+=1
+
+    mplss_num = 0
+    while len(mpls_tags):
+        tag = mpls_tags.pop(0)
+        mpls = MPLS()
+        if 'label' in tag:
+            mpls.label = tag['label']
+        if 'tc' in tag:
+            mpls.cos = tag['tc']
+        if 'ttl' in tag:
+            mpls.ttl = tag['ttl']
+        pkt = pkt / mpls
+        if 'type' in tag:
+            if mplss_num == 0:
+                if vlans_num == 0:
+                    pkt[Ether].setfieldval('type', tag['type'])
+                else:
+                    pkt[Dot1Q:vlans_num].setfieldval('type', tag['type'])
+        mplss_num+=1
+
+    pkt = pkt / IP(src=ip_src, dst=ip_dst, tos=ip_tos, ttl=ip_ttl) \
+              / ICMP(type=icmp_type, code=icmp_code)
+
+    pkt = pkt / ("D" * payload_len)
+
+    return pkt
+
+def simple_ipv6_packet(pktlen=100, 
+                      dl_dst='00:01:02:03:04:05',
+                      dl_src='00:06:07:08:09:0a',
+                      dl_vlan_enable=False,
+                      dl_vlan=0,
+                      dl_vlan_pcp=0,
+                      dl_vlan_cfi=0,
+                      ip_src='fe80::2420:52ff:fe8f:5189',
+                      ip_dst='fe80::2420:52ff:fe8f:5190',
+                      ip_tos=0,
+                      tcp_sport=0,
+                      tcp_dport=0, 
+                      EH = False, 
+                      EHpkt = IPv6ExtHdrDestOpt()
+                      ):
+
+    """
+    Return a simple IPv6 packet 
+
+    Supports a few parameters:
+    @param len Length of packet in bytes w/o CRC
+    @param dl_dst Destinatino MAC
+    @param dl_src Source MAC
+    @param dl_vlan_enable True if the packet is with vlan, False otherwise
+    @param dl_vlan VLAN ID
+    @param dl_vlan_pcp VLAN priority
+    @param ip_src IPv6 source
+    @param ip_dst IPv6 destination
+    @param ip_tos IP ToS
+    @param tcp_dport TCP destination port
+    @param ip_sport TCP source port
+
+    """
+    # Note Dot1Q.id is really CFI
+    if (dl_vlan_enable):
+        pkt = Ether(dst=dl_dst, src=dl_src)/ \
+            Dot1Q(prio=dl_vlan_pcp, id=dl_vlan_cfi, vlan=dl_vlan)/ \
+            IPv6(src=ip_src, dst=ip_dst)
+
+    else:
+        pkt = Ether(dst=dl_dst, src=dl_src)/ \
+            IPv6(src=ip_src, dst=ip_dst)
+
+    # Add IPv6 Extension Headers 
+    if EH:
+        pkt = pkt / EHpkt
+
+    if (tcp_sport >0 and tcp_dport >0):
+        pkt = pkt / TCP(sport=tcp_sport, dport=tcp_dport)
+
+    if pktlen > len(pkt) :
+        pkt = pkt/("D" * (pktlen - len(pkt)))
+
+    return pkt
+
+def simple_icmpv6_packet(pktlen=100, 
+                      dl_dst='00:01:02:03:04:05',
+                      dl_src='00:06:07:08:09:0a',
+                      dl_vlan_enable=False,
+                      dl_vlan=0,
+                      dl_vlan_pcp=0,
+                      dl_vlan_cfi=0,
+                      ip_src='fe80::2420:52ff:fe8f:5189',
+                      ip_dst='fe80::2420:52ff:fe8f:5190',
+                      ip_tos=0,
+                      tcp_sport=0,
+                      tcp_dport=0, 
+                      EH = False, 
+                      EHpkt = IPv6ExtHdrDestOpt(),
+                      route_adv = False,
+                      sll_enabled = False
+                      ):
+
+    """
+    Return a simple dataplane ICMPv6 packet 
+
+    Supports a few parameters:
+    @param len Length of packet in bytes w/o CRC
+    @param dl_dst Destinatino MAC
+    @param dl_src Source MAC
+    @param dl_vlan_enable True if the packet is with vlan, False otherwise
+    @param dl_vlan VLAN ID
+    @param dl_vlan_pcp VLAN priority
+    @param ip_src IPv6 source
+    @param ip_dst IPv6 destination
+    @param ip_tos IP ToS
+    @param tcp_dport TCP destination port
+    @param ip_sport TCP source port
+    
+    """
+    if (dl_vlan_enable):
+        pkt = Ether(dst=dl_dst, src=dl_src)/ \
+            Dot1Q(prio=dl_vlan_pcp, id=dl_vlan_cfi, vlan=dl_vlan)/ \
+            IPv6(src=ip_src, dst=ip_dst)
+
+    else:
+        pkt = Ether(dst=dl_dst, src=dl_src)/ \
+            IPv6(src=ip_src, dst=ip_dst)
+            
+            
+    # Add IPv6 Extension Headers 
+    if EH:
+        pkt = pkt / EHpkt
+
+    if route_adv:
+        pkt = pkt/ \
+        ICMPv6ND_RA(chlim=255, H=0L, M=0L, O=1L, routerlifetime=1800, P=0L, retranstimer=0, prf=0L, res=0L)/ \
+        ICMPv6NDOptPrefixInfo(A=1L, res2=0, res1=0L, L=1L, len=4, prefix='fd00:141:64:1::', R=0L, validlifetime=1814400, prefixlen=64, preferredlifetime=604800, type=3)
+        if sll_enabled :
+            pkt = pkt/ \
+            ICMPv6NDOptSrcLLAddr(type=1, len=1, lladdr='66:6f:df:2d:7c:9c')
+    else :
+        pkt = pkt/ \
+            ICMPv6EchoRequest()
+    if (tcp_sport >0 and tcp_dport >0):
+        pkt = pkt / TCP(sport=tcp_sport, dport=tcp_dport)
+
+    if pktlen > len(pkt) :
+        pkt = pkt/("D" * (pktlen - len(pkt)))
+
+    return pkt
+
+
+def do_barrier(ctrl):
+    b = ofp.message.barrier_request()
+    ctrl.transact(b)
+
+
+def port_config_get(controller, port_no, logger):
+    """
+    Get a port's configuration
+
+    Gets the switch feature configuration and grabs one port's
+    configuration
+
+    @returns (hwaddr, config, advert) The hwaddress, configuration and
+    advertised values
+    """
+    request = ofp.message.features_request()
+    reply, _ = controller.transact(request, timeout=2)
+    if reply is None:
+        logger.warn("Get feature request failed")
+        return None, None, None
+    logger.debug(reply.show())
+    for idx in range(len(reply.ports)):
+        if reply.ports[idx].port_no == port_no:
+            return (reply.ports[idx].hw_addr, reply.ports[idx].config,
+                    reply.ports[idx].advertised)
+    
+    logger.warn("Did not find port number for port config")
+    return None, None, None
+
+def port_config_set(controller, port_no, config, mask, logger):
+    """
+    Set the port configuration according the given parameters
+
+    Gets the switch feature configuration and updates one port's
+    configuration value according to config and mask
+    """
+    logger.info("Setting port " + str(port_no) + " to config " + str(config))
+    request = ofp.message.features_request()
+    reply, _ = controller.transact(request, timeout=2)
+    if reply is None:
+        return -1
+    logger.debug(reply.show())
+    for idx in range(len(reply.ports)):
+        if reply.ports[idx].port_no == port_no:
+            break
+    if idx >= len(reply.ports):
+        return -1
+    mod = ofp.message.port_mod()
+    mod.port_no = port_no
+    mod.hw_addr = reply.ports[idx].hw_addr
+    mod.config = config
+    mod.mask = mask
+    mod.advertise = reply.ports[idx].advertised
+    rv = controller.message_send(mod)
+    return rv
+
+def receive_pkt_check(dataplane, pkt, yes_ports, no_ports, assert_if, logger):
+    """
+    Check for proper receive packets across all ports
+    @param dataplane The dataplane object
+    @param pkt Expected packet; may be None if yes_ports is empty
+    @param yes_ports Set or list of ports that should recieve packet
+    @param no_ports Set or list of ports that should not receive packet
+    @param assert_if Object that implements assertXXX
+    """
+    for ofport in yes_ports:
+        logger.debug("Checking for pkt on port " + str(ofport))
+        (_, rcv_pkt, _) = dataplane.poll(
+            port_number=ofport, timeout=1)
+        assert_if.assertTrue(rcv_pkt is not None, 
+                             "Did not receive pkt on " + str(ofport))
+        assert_if.assertEqual(str(pkt), str(rcv_pkt),
+                              "Response packet does not match send packet " +
+                              "on port " + str(ofport))
+
+    for ofport in no_ports:
+        logger.debug("Negative check for pkt on port " + str(ofport))
+        (_, rcv_pkt, _) = dataplane.poll(
+            port_number=ofport, timeout=1)
+        assert_if.assertTrue(rcv_pkt is None, 
+                             "Unexpected pkt on port " + str(ofport))
+
+
+def pkt_verify(parent, rcv_pkt, exp_pkt):
+    if str(exp_pkt) != str(rcv_pkt):
+        logging.error("ERROR: Packet match failed.")
+        logging.debug("Expected (" + str(len(exp_pkt)) + ")")
+        logging.debug(str(exp_pkt).encode('hex'))
+        sys.stdout = tmpout = StringIO()
+        exp_pkt.show()
+        sys.stdout = sys.__stdout__
+        logging.debug(tmpout.getvalue())
+        logging.debug("Received (" + str(len(rcv_pkt)) + ")")
+        logging.debug(str(rcv_pkt).encode('hex'))
+        sys.stdout = tmpout = StringIO()
+        Ether(rcv_pkt).show()
+        sys.stdout = sys.__stdout__
+        logging.debug(tmpout.getvalue())
+    parent.assertEqual(str(exp_pkt), str(rcv_pkt),
+                       "Packet match error")
+    
+    return rcv_pkt
+
+def receive_pkt_verify(parent, egr_port, exp_pkt):
+    """
+    Receive a packet and verify it matches an expected value
+
+    parent must implement dataplane, assertTrue and assertEqual
+    """
+    (rcv_port, rcv_pkt, _) = parent.dataplane.poll(port_number=egr_port,
+                                                          timeout=1)
+
+    if exp_pkt is None:
+        if rcv_pkt is None:
+            return None
+        else:
+            logging.error("ERROR: Received unexpected packet from " + str(egr_port));
+            return rcv_pkt
+
+    if rcv_pkt is None:
+        logging.error("ERROR: No packet received from " + str(egr_port))
+
+    parent.assertTrue(rcv_pkt is not None,
+                      "Did not receive packet port " + str(egr_port))
+    logging.debug("Packet len " + str(len(rcv_pkt)) + " in on " + 
+                    str(rcv_port))
+
+    return pkt_verify(parent, rcv_pkt, exp_pkt)
+
+def packetin_verify(parent, exp_pkt):
+    """
+    Receive packet_in and verify it matches an expected value
+    """
+    (response, _) = parent.controller.poll(ofp.OFPT_PACKET_IN, 2)
+
+    parent.assertTrue(response is not None, 'Packet in ofp.message not received')
+    if str(exp_pkt) != response.data:
+        logging.debug("pkt  len " + str(len(str(exp_pkt))) + ": "
+                            + str(exp_pkt).encode('hex'))
+        logging.debug("resp len " + str(len(str(response.data))) + ": "
+                            + str(response.data).encode('hex'))
+    parent.assertEqual(str(exp_pkt), response.data,
+                     'PACKET_IN packet does not match send packet')
+
+def match_verify(parent, req_match, res_match):
+    """
+    Verify flow matches agree; if they disagree, report where
+
+    parent must implement assertEqual
+    Use str() to ensure content is compared and not pointers
+    """
+
+    parent.assertEqual(req_match.wildcards, res_match.wildcards,
+                       'Match failed: wildcards: ' + hex(req_match.wildcards) +
+                       " != " + hex(res_match.wildcards))
+    parent.assertEqual(req_match.in_port, res_match.in_port,
+                       'Match failed: in_port: ' + str(req_match.in_port) +
+                       " != " + str(res_match.in_port))
+    parent.assertEqual(str(req_match.dl_src), str(res_match.dl_src),
+                       'Match failed: dl_src: ' + str(req_match.dl_src) +
+                       " != " + str(res_match.dl_src))
+    parent.assertEqual(str(req_match.dl_dst), str(res_match.dl_dst),
+                       'Match failed: dl_dst: ' + str(req_match.dl_dst) +
+                       " != " + str(res_match.dl_dst))
+    parent.assertEqual(req_match.dl_vlan, res_match.dl_vlan,
+                       'Match failed: dl_vlan: ' + str(req_match.dl_vlan) +
+                       " != " + str(res_match.dl_vlan))
+    parent.assertEqual(req_match.dl_vlan_pcp, res_match.dl_vlan_pcp,
+                       'Match failed: dl_vlan_pcp: ' + 
+                       str(req_match.dl_vlan_pcp) + " != " + 
+                       str(res_match.dl_vlan_pcp))
+    parent.assertEqual(req_match.dl_type, res_match.dl_type,
+                       'Match failed: dl_type: ' + str(req_match.dl_type) +
+                       " != " + str(res_match.dl_type))
+
+    if (not(req_match.wildcards & ofp.OFPFW_DL_TYPE)
+        and (req_match.dl_type == IP_ETHERTYPE)):
+        parent.assertEqual(req_match.nw_tos, res_match.nw_tos,
+                           'Match failed: nw_tos: ' + str(req_match.nw_tos) +
+                           " != " + str(res_match.nw_tos))
+        parent.assertEqual(req_match.nw_proto, res_match.nw_proto,
+                           'Match failed: nw_proto: ' + str(req_match.nw_proto) +
+                           " != " + str(res_match.nw_proto))
+        parent.assertEqual(req_match.nw_src, res_match.nw_src,
+                           'Match failed: nw_src: ' + str(req_match.nw_src) +
+                           " != " + str(res_match.nw_src))
+        parent.assertEqual(req_match.nw_dst, res_match.nw_dst,
+                           'Match failed: nw_dst: ' + str(req_match.nw_dst) +
+                           " != " + str(res_match.nw_dst))
+
+        if (not(req_match.wildcards & ofp.OFPFW_NW_PROTO)
+            and ((req_match.nw_proto == TCP_PROTOCOL)
+                 or (req_match.nw_proto == UDP_PROTOCOL))):
+            parent.assertEqual(req_match.tp_src, res_match.tp_src,
+                               'Match failed: tp_src: ' + 
+                               str(req_match.tp_src) +
+                               " != " + str(res_match.tp_src))
+            parent.assertEqual(req_match.tp_dst, res_match.tp_dst,
+                               'Match failed: tp_dst: ' + 
+                               str(req_match.tp_dst) +
+                               " != " + str(res_match.tp_dst))
+
+def flow_removed_verify(parent, request=None, pkt_count=-1, byte_count=-1):
+    """
+    Receive a flow removed msg and verify it matches expected
+
+    @params parent Must implement controller, assertEqual
+    @param pkt_count If >= 0, verify packet count
+    @param byte_count If >= 0, verify byte count
+    """
+    (response, _) = parent.controller.poll(ofp.OFPT_FLOW_REMOVED, 2)
+    parent.assertTrue(response is not None, 'No flow removed ofp.message received')
+
+    if request is None:
+        return
+
+    parent.assertEqual(request.cookie, response.cookie,
+                       "Flow removed cookie error: " +
+                       hex(request.cookie) + " != " + hex(response.cookie))
+
+    req_match = request.match
+    res_match = response.match
+    verifyMatchField(req_match, res_match)
+
+    if (req_match.wildcards != 0):
+        parent.assertEqual(request.priority, response.priority,
+                           'Flow remove prio mismatch: ' + 
+                           str(request.priority) + " != " + 
+                           str(response.priority))
+        parent.assertEqual(response.reason, ofp.OFPRR_HARD_TIMEOUT,
+                           'Flow remove reason is not HARD TIMEOUT:' +
+                           str(response.reason))
+        if pkt_count >= 0:
+            parent.assertEqual(response.packet_count, pkt_count,
+                               'Flow removed failed, packet count: ' + 
+                               str(response.packet_count) + " != " +
+                               str(pkt_count))
+        if byte_count >= 0:
+            parent.assertEqual(response.byte_count, byte_count,
+                               'Flow removed failed, byte count: ' + 
+                               str(response.byte_count) + " != " + 
+                               str(byte_count))
+def flow_msg_create(parent, pkt, ing_port=0, match_fields=None, instruction_list=None, 
+                    action_list=None,wildcards=0, egr_port=None, 
+                    egr_queue=None, table_id=0, check_expire=False):
+    """
+    Multi-purpose flow_mod creation utility
+
+    Match on packet with given wildcards.  
+    See flow_match_test for other parameter descriptoins
+   
+    if egr_queue is set
+             append an out_queue ofp.action to egr_queue to the actions_list
+    else if egr_port is set:  
+             append an output ofp.action to egr_port to the actions_list
+    if the instruction_list is empty, 
+        append an APPLY ofp.instruction to it
+    Add the action_list to the first write or apply ofp.instruction
+    
+    @param egr_queue if not None, make the output an enqueue ofp.action
+    @param table_id Table ID for writing a flow_mod
+    """
+
+    if match_fields is None:
+        match_fields = parse.packet_to_flow_match(pkt)
+    parent.assertTrue(match_fields is not None, "Flow match from pkt failed")
+    in_port = ofp.oxm.in_port(ing_port)
+    match_fields.oxm_list.append(in_port) 
+    request = ofp.message.flow_add()
+    request.match= match_fields
+    request.buffer_id = 0xffffffff
+    request.table_id = table_id
+    
+    if check_expire:
+        request.flags |= ofp.OFPFF_SEND_FLOW_REM
+        request.hard_timeout = 1    
+    
+    if action_list is None:
+        action_list = []
+    if instruction_list is None:
+        instruction_list = []
+    
+    # Set up output/enqueue ofp.action if directed
+    if egr_queue is not None:
+        parent.assertTrue(egr_port is not None, "Egress port not set")
+        act = ofp.action.set_queue()
+        act.port = egr_port
+        act.queue_id = egr_queue
+        action_list.append(act)
+    elif egr_port is not None:
+        act = ofp.action.output()
+        act.port = egr_port
+        action_list.append(act)
+        
+    inst = None
+    if len(instruction_list) == 0: 
+        inst = ofp.instruction.apply_actions()
+        instruction_list.append(inst)
+    else:
+        for inst in instruction_list:
+            if (inst.type == ofp.OFPIT_WRITE_ACTIONS or
+                inst.type == ofp.OFPIT_APPLY_ACTIONS):
+                break
+
+
+    # add all the actions to the last inst
+    inst.actions += action_list
+
+    # add all the instrutions to the flow_mod
+    request.instructions += instruction_list
+ 
+    logging.debug(request.show())
+    return request
+
+def flow_msg_install(parent, request, clear_table=True):
+    """
+    Install a flow mod ofp.message in the switch
+
+    @param parent Must implement controller, assertEqual, assertTrue
+    @param request The request, all set to go
+    @param clear_table If true, clear the flow table before installing
+    """
+    if clear_table:
+        logging.debug("Clear flow table")
+        if request.table_id:
+            table_id = request.table_id
+        else:
+            table_id = 0
+        rc = delete_all_flows_one_table(parent.controller,
+                                        logging,
+                                        table_id)
+        parent.assertEqual(rc, 0, "Failed to delete all flows on table: "
+                           + str(table_id))
+        do_barrier(parent.controller)
+
+    logging.debug("Insert flow::\n%s" % request.show())
+    rv = parent.controller.message_send(request)
+    parent.assertTrue(rv != -1, "Error installing flow mod")
+    do_barrier(parent.controller)
+
+def error_verify(parent, exp_type, exp_code):
+    """
+    Receive an error msg and verify if it is as expected
+
+    @param parent Must implement controller, assertEqual
+    @param exp_type Expected error type
+    @param exp_code Expected error code
+    """
+    (response, raw) = parent.controller.poll(ofp.OFPT_ERROR, 2)
+    parent.assertTrue(response is not None, 'No error ofp.message received')
+
+    if (exp_type is None) or (exp_code is None):
+        logging.debug("Parametrs are not sufficient")
+        return
+
+    parent.assertEqual(exp_type, response.type,
+                       'Error ofp.message type mismatch: ' +
+                       str(exp_type) + " != " +
+                       str(response.type))
+    parent.assertEqual(exp_code, response.code,
+                       'Error ofp.message code mismatch: ' +
+                       str(exp_code) + " != " +
+                       str(response.code))
+
+def flow_match_test_port_pair(parent, ing_port, egr_port, match=None, 
+                              wildcards=0, mask=None,
+                              dl_vlan=-1, pkt=None, exp_pkt=None,
+                              apply_action_list=None, check_expire=False):
+    """
+    Flow match test on single TCP packet
+
+    Run test with packet through switch from ing_port to egr_port
+    See flow_match_test for parameter descriptions
+    """
+
+    logging.info("Pkt match test: " + str(ing_port) + " to " + str(egr_port))
+    logging.debug("  WC: " + hex(wildcards) + " vlan: " + str(dl_vlan) +
+                    " expire: " + str(check_expire))
+    if pkt is None:
+        if dl_vlan >= 0:
+            pkt = simple_tcp_packet(vlan_tags=[{'vid': dl_vlan}])
+        else:
+            pkt = simple_tcp_packet()
+
+    match = parse.packet_to_flow_match(pkt)
+    parent.assertTrue(match is not None, "Flow match from pkt failed")
+
+    if mask is not None:
+        match.dl_src_mask = mask['dl_src']
+        match.dl_dst_mask = mask['dl_dst']
+        match.nw_src_mask = mask['nw_src']
+        match.nw_dst_mask = mask['nw_dst']
+        #Set unmatching values on corresponding match fields
+        for i in range(ofp.OFP_ETH_ALEN):
+            match.dl_src[i] = match.dl_src[i] ^ match.dl_src_mask[i]
+            match.dl_dst[i] = match.dl_dst[i] ^ match.dl_dst_mask[i]
+        match.nw_src = match.nw_src ^ match.nw_src_mask
+        match.nw_dst = match.nw_dst ^ match.nw_dst_mask
+
+    request = flow_msg_create(parent, pkt, ing_port=ing_port, 
+                              match=match,
+                              wildcards=wildcards, egr_port=egr_port,
+                              action_list=apply_action_list)
+
+    flow_msg_install(parent, request)
+
+    logging.debug("Send packet: " + str(ing_port) + " to " + str(egr_port))
+    parent.dataplane.send(ing_port, str(pkt))
+
+    if exp_pkt is None:
+        exp_pkt = pkt
+    receive_pkt_verify(parent, egr_port, exp_pkt)
+
+    if check_expire:
+        #@todo Not all HW supports both pkt and byte counters
+        flow_removed_verify(parent, request, pkt_count=1, byte_count=len(pkt))
+def flow_match_test(parent, port_map, match=None, wildcards=0,
+                    mask=None, dl_vlan=-1, pkt=None,
+                    exp_pkt=None, apply_action_list=None,
+                    check_expire=False,  max_test=0):
+    """
+    Run flow_match_test_port_pair on all port pairs
+
+    @param max_test If > 0 no more than this number of tests are executed.
+    @param parent Must implement controller, dataplane, assertTrue, assertEqual
+    and logger
+    @param pkt If not None, use this packet for ingress
+    @param match If not None, use this value in flow_mod
+    @param wildcards For flow match entry
+    @param mask DL/NW address bit masks as a dictionary. If set, it is tested
+    against the corresponding match fields with the opposite values
+    @param dl_vlan If not -1, and pkt is None, create a pkt w/ VLAN tag
+    @param exp_pkt If not None, use this as the expected output pkt; els use pkt
+    @param action_list Additional actions to add to flow mod
+    @param check_expire Check for flow expiration ofp.message
+    """
+    of_ports = port_map.keys()
+    of_ports.sort()
+    parent.assertTrue(len(of_ports) > 1, "Not enough ports for test")
+    test_count = 0
+
+    for ing_idx in range(len(of_ports)):
+        ingress_port = of_ports[ing_idx]
+        for egr_idx in range(len(of_ports)):
+            if egr_idx == ing_idx:
+                continue
+            egress_port = of_ports[egr_idx]
+            flow_match_test_port_pair(parent, ingress_port, egress_port, 
+                                      match=match, wildcards=wildcards,
+                                      dl_vlan=dl_vlan, mask=mask,
+                                      pkt=pkt, exp_pkt=exp_pkt,
+                                      apply_action_list=apply_action_list,
+                                      check_expire=check_expire)
+            test_count += 1
+            if (max_test > 0) and (test_count >= max_test):
+                logging.info("Ran " + str(test_count) + " tests; exiting")
+                return
+
+def flow_match_test_port_pair_vlan(parent, ing_port, egr_port, wildcards=0,
+                                   dl_vlan=ofp.OFPVID_NONE, dl_vlan_pcp=0,
+                                   dl_vlan_type=ETHERTYPE_VLAN,
+                                   dl_vlan_int=-1, dl_vlan_pcp_int=0,
+                                   vid_match=ofp.OFPVID_NONE, pcp_match=0,
+                                   exp_vid=-1, exp_pcp=0,
+                                   exp_vlan_type=ETHERTYPE_VLAN,
+                                   match_exp=True,
+                                   add_tag_exp=False,
+                                   exp_msg=ofp.OFPT_FLOW_REMOVED,
+                                   exp_msg_type=0, exp_msg_code=0,
+                                   pkt=None, exp_pkt=None,
+                                   action_list=None, check_expire=False):
+    """
+    Flow match test for various vlan matching patterns on single TCP packet
+
+    Run test with packet through switch from ing_port to egr_port
+    See flow_match_test_vlan for parameter descriptions
+    """
+    logging.info("Pkt match test: " + str(ing_port) + " to " + str(egr_port))
+    logging.debug("  WC: " + hex(wildcards) + " vlan: " + str(dl_vlan) +
+                    " expire: " + str(check_expire))
+    if pkt is None:
+        if dl_vlan >= 0 and dl_vlan != ofp.OFPVID_NONE:
+            if dl_vlan_int >= 0 and dl_vlan_int != ofp.OFPVID_NONE:
+                pkt = simple_tcp_packet(
+                        vlan_tags=[{'type': dl_vlan_type, 'vid': dl_vlan, 'pcp': dl_vlan_pcp},
+                                   {'vid': dl_vlan_int, 'pcp': dl_vlan_pcp_int}])
+            else:
+                pkt = simple_tcp_packet(
+                        vlan_tags=[{'type': dl_vlan_type, 'vid': dl_vlan, 'pcp': dl_vlan_pcp}])
+        else:
+            pkt = simple_tcp_packet()
+
+    if exp_pkt is None:
+        if exp_vid >= 0 and exp_vid != ofp.OFPVID_NONE:
+            if add_tag_exp:
+                if dl_vlan >= 0 and dl_vlan != ofp.OFPVID_NONE:
+                    if dl_vlan_int >= 0 and dl_vlan_int != ofp.OFPVID_NONE:
+                        exp_pkt = simple_tcp_packet(
+                                    vlan_tags=[{'type': exp_vlan_type, 'vid': exp_vid, 'pcp': exp_pcp},
+                                               {'type': dl_vlan_type, 'vid': dl_vlan, 'pcp': dl_vlan_pcp},
+                                               {'vid': dl_vlan_int, 'pcp': dl_vlan_pcp_int}])
+                    else:
+                        exp_pkt = simple_tcp_packet(
+                                    vlan_tags=[{'type': exp_vlan_type, 'vid': exp_vid, 'pcp': exp_pcp},
+                                               {'type': dl_vlan_type, 'vid': dl_vlan, 'pcp': dl_vlan_pcp}])
+                else:
+                    exp_pkt = simple_tcp_packet(
+                                vlan_tags=[{'type': exp_vlan_type, 'vid': exp_vid, 'pcp': exp_pcp}])
+            else:
+                if dl_vlan_int >= 0:
+                    exp_pkt = simple_tcp_packet(
+                                vlan_tags=[{'type': exp_vlan_type, 'vid': exp_vid, 'pcp': exp_pcp},
+                                           {'vid': dl_vlan_int, 'pcp': dl_vlan_pcp_int}])
+
+                else:
+                    exp_pkt = simple_tcp_packet(
+                                vlan_tags=[{'type': exp_vlan_type, 'vid': exp_vid, 'pcp': exp_pcp}])
+        else:
+            #subtract ofp.action
+            if dl_vlan_int >= 0:
+                exp_pkt = simple_tcp_packet(
+                            vlan_tags=[{'vid': dl_vlan_int, 'pcp': dl_vlan_pcp_int}])
+            else:
+                exp_pkt = simple_tcp_packet()
+
+    match = parse.packet_to_flow_match(pkt)
+    parent.assertTrue(match is not None, "Flow match from pkt failed")
+
+    match.dl_vlan = vid_match
+    match.dl_vlan_pcp = pcp_match
+    match.wildcards = wildcards
+
+    request = flow_msg_create(parent, pkt, ing_port=ing_port,
+                              wildcards=wildcards,
+                              match=match,
+                              egr_port=egr_port,
+                              action_list=action_list)
+
+    flow_msg_install(parent, request)
+
+    logging.debug("Send packet: " + str(ing_port) + " to " + str(egr_port))
+    logging.debug("Sent:" + str(pkt).encode('hex'))
+    parent.dataplane.send(ing_port, str(pkt))
+
+    if match_exp:
+        receive_pkt_verify(parent, egr_port, exp_pkt)
+        if check_expire:
+            #@todo Not all HW supports both pkt and byte counters
+            flow_removed_verify(parent, request, pkt_count=1, byte_count=len(pkt))
+    else:
+        if exp_msg is ofp.OFPT_FLOW_REMOVED:
+            if check_expire:
+                flow_removed_verify(parent, request, pkt_count=0, byte_count=0)
+        elif exp_msg is ofp.OFPT_ERROR:
+            error_verify(parent, exp_msg_type, exp_msg_code)
+        else:
+            parent.assertTrue(0, "Rcv: Unexpected ofp.message: " + str(exp_msg))
+
+        (_, rcv_pkt, _) = parent.dataplane.poll(timeout=1)
+        parent.assertFalse(rcv_pkt is not None, "Packet on dataplane")
+
+def flow_match_test_vlan(parent, port_map, wildcards=0,
+                         dl_vlan=ofp.OFPVID_NONE, dl_vlan_pcp=0, dl_vlan_type=ETHERTYPE_VLAN,
+                         dl_vlan_int=-1, dl_vlan_pcp_int=0,
+                         vid_match=ofp.OFPVID_NONE, pcp_match=0,
+                         exp_vid=-1, exp_pcp=0,
+                         exp_vlan_type=ETHERTYPE_VLAN,
+                         match_exp=True,
+                         add_tag_exp=False,
+                         exp_msg=ofp.OFPT_FLOW_REMOVED,
+                         exp_msg_type=0, exp_msg_code=0,
+                         pkt=None, exp_pkt=None,
+                         action_list=None,
+                         check_expire=False,
+                         max_test=0):
+    """
+    Run flow_match_test_port_pair on all port pairs
+
+    @param max_test If > 0 no more than this number of tests are executed.
+    @param parent Must implement controller, dataplane, assertTrue, assertEqual
+    and logger
+    @param wildcards For flow match entry
+    @param dl_vlan If not -1, and pkt is not None, create a pkt w/ VLAN tag
+    @param dl_vlan_pcp VLAN PCP associated with dl_vlan
+    @param dl_vlan_type VLAN ether type associated with dl_vlan
+    @param dl_vlan_int If not -1, create pkt w/ Inner Vlan tag
+    @param dl_vlan_pcp_int VLAN PCP associated with dl_vlan_2nd
+    @param vid_match Matching value for VLAN VID field
+    @param pcp_match Matching value for VLAN PCP field
+    @param exp_vid Expected VLAN VID value. If -1, no VLAN expected
+    @param exp_vlan_type Expected VLAN ether type
+    @param exp_pcp Expected VLAN PCP value
+    @param match_exp Set whether packet is expected to receive
+    @param add_tag_exp If True, expected_packet has an additional vlan tag,
+    If not, expected_packet's vlan tag is replaced as specified
+    @param exp_msg Expected ofp.message
+    @param exp_msg_type Expected ofp.message type associated with the ofp.message
+    @param exp_msg_code Expected ofp.message code associated with the msg_type
+    @param pkt If not None, use this packet for ingress
+    @param exp_pkt If not None, use this as the expected output pkt
+    @param action_list Additional actions to add to flow mod
+    @param check_expire Check for flow expiration ofp.message
+    """
+    of_ports = port_map.keys()
+    of_ports.sort()
+    parent.assertTrue(len(of_ports) > 1, "Not enough ports for test")
+    test_count = 0
+
+    for ing_idx in range(len(of_ports)):
+        ingress_port = of_ports[ing_idx]
+        for egr_idx in range(len(of_ports)):
+            if egr_idx == ing_idx:
+                continue
+            egress_port = of_ports[egr_idx]
+            flow_match_test_port_pair_vlan(parent, ingress_port, egress_port,
+                                           wildcards=wildcards,
+                                           dl_vlan=dl_vlan,
+                                           dl_vlan_pcp=dl_vlan_pcp,
+                                           dl_vlan_type=dl_vlan_type,
+                                           dl_vlan_int=dl_vlan_int,
+                                           dl_vlan_pcp_int=dl_vlan_pcp_int,
+                                           vid_match=vid_match,
+                                           pcp_match=pcp_match,
+                                           exp_vid=exp_vid,
+                                           exp_pcp=exp_pcp,
+                                           exp_vlan_type=exp_vlan_type,
+                                           exp_msg=exp_msg,
+                                           exp_msg_type=exp_msg_type,
+                                           exp_msg_code=exp_msg_code,
+                                           match_exp=match_exp,
+                                           add_tag_exp=add_tag_exp,
+                                           pkt=pkt, exp_pkt=exp_pkt,
+                                           action_list=action_list,
+                                           check_expire=check_expire)
+            test_count += 1
+            if (max_test > 0) and (test_count >= max_test):
+                logging.info("Ran " + str(test_count) + " tests; exiting")
+                return
+
+def test_param_get(config, key, default=None):
+    """
+    Return value passed via test-params if present
+
+    @param config The configuration structure for OFTest
+    @param key The lookup key
+    @param default Default value to use if not found
+
+    If the pair 'key=val' appeared in the string passed to --test-params
+    on the command line, return val (as interpreted by exec).  Otherwise
+    return default value.
+    """
+    try:
+        exec config["test_params"]
+    except:
+        return default
+
+    s = "val = " + str(key)
+    try:
+        val = None
+        exec s
+        return val
+    except:
+        return default
+
+def action_generate(parent, field_to_mod, mod_field_vals):
+    """
+    Create an ofp.action to modify the field indicated in field_to_mod
+
+    @param parent Must implement, assertTrue
+    @param field_to_mod The field to modify as a string name
+    @param mod_field_vals Hash of values to use for modified values
+    """
+
+    act = None
+
+    if field_to_mod in ['pktlen']:
+        return None
+
+    if field_to_mod == 'dl_dst':
+        act = ofp.action.set_dl_dst()
+        act.dl_addr = parse.parse_mac(mod_field_vals['dl_dst'])
+    elif field_to_mod == 'dl_src':
+        act = ofp.action.set_dl_src()
+        act.dl_addr = parse.parse_mac(mod_field_vals['dl_src'])
+    elif field_to_mod == 'vlan_tags':
+        if len(mod_field_vals['vlan_tags']):
+            act = ofp.action.pop_vlan()
+        else:
+            pass
+#    elif field_to_mod == 'dl_vlan_enable':
+#        if not mod_field_vals['dl_vlan_enable']: # Strip VLAN tag
+#            act = ofp.action.pop_vlan()
+#        # Add VLAN tag is handled by dl_vlan field
+#        # Will return None in this case
+#    elif field_to_mod == 'dl_vlan':
+#        act = ofp.action.set_vlan_vid()
+#        act.vlan_vid = mod_field_vals['dl_vlan']
+#    elif field_to_mod == 'dl_vlan_pcp':
+#        act = ofp.action.set_vlan_pcp()
+#        act.vlan_pcp = mod_field_vals['dl_vlan_pcp']
+    elif field_to_mod == 'ip_src':
+        act = ofp.action.set_nw_src()
+        act.nw_addr = parse.parse_ip(mod_field_vals['ip_src'])
+    elif field_to_mod == 'ip_dst':
+        act = ofp.action.set_nw_dst()
+        act.nw_addr = parse.parse_ip(mod_field_vals['ip_dst'])
+    elif field_to_mod == 'ip_tos':
+        act = ofp.action.set_nw_tos()
+        act.nw_tos = mod_field_vals['ip_tos']
+    elif field_to_mod == 'tcp_sport':
+        act = ofp.action.set_tp_src()
+        act.tp_port = mod_field_vals['tcp_sport']
+    elif field_to_mod == 'tcp_dport':
+        act = ofp.action.set_tp_dst()
+        act.tp_port = mod_field_vals['tcp_dport']
+    else:
+        parent.assertTrue(0, "Unknown field to modify: " + str(field_to_mod))
+
+    return act
+
+def pkt_action_setup(parent, start_field_vals={}, mod_field_vals={}, 
+                     mod_fields={}, check_test_params=False):
+    """
+    Set up the ingress and expected packet and ofp.action list for a test
+
+    @param parent Must implement, assertTrue, config hash and logger
+    @param start_field_values Field values to use for ingress packet (optional)
+    @param mod_field_values Field values to use for modified packet (optional)
+    @param mod_fields The list of fields to be modified by the switch in the test.
+    @params check_test_params If True, will check the parameters vid, add_vlan
+    and strip_vlan from the command line.
+
+    Returns a triple:  pkt-to-send, expected-pkt, ofp.action-list
+    """
+
+    new_actions = []
+
+
+    base_pkt_params = {}
+    base_pkt_params['dl_dst'] = '00:DE:F0:12:34:56'
+    base_pkt_params['dl_src'] = '00:23:45:67:89:AB'
+#    base_pkt_params['dl_vlan_enable'] = False
+#    base_pkt_params['dl_vlan'] = 2
+#    base_pkt_params['dl_vlan_pcp'] = 0
+    base_pkt_params['ip_src'] = '192.168.0.1'
+    base_pkt_params['ip_dst'] = '192.168.0.2'
+    base_pkt_params['ip_tos'] = 0
+    base_pkt_params['tcp_sport'] = 1234
+    base_pkt_params['tcp_dport'] = 80
+    for keyname in start_field_vals.keys():
+        base_pkt_params[keyname] = start_field_vals[keyname]
+
+    mod_pkt_params = {}
+    mod_pkt_params['dl_dst'] = '00:21:0F:ED:CB:A9'
+    mod_pkt_params['dl_src'] = '00:ED:CB:A9:87:65'
+#    mod_pkt_params['dl_vlan_enable'] = False
+#    mod_pkt_params['dl_vlan'] = 3
+#    mod_pkt_params['dl_vlan_pcp'] = 7
+    mod_pkt_params['ip_src'] = '10.20.30.40'
+    mod_pkt_params['ip_dst'] = '50.60.70.80'
+    mod_pkt_params['ip_tos'] = 0xf0
+    mod_pkt_params['tcp_sport'] = 4321
+    mod_pkt_params['tcp_dport'] = 8765
+    for keyname in mod_field_vals.keys():
+        mod_pkt_params[keyname] = mod_field_vals[keyname]
+
+    # Check for test param modifications
+    strip = False
+    if check_test_params:
+        add_vlan = test_param_get(parent.config, 'add_vlan')
+        strip_vlan = test_param_get(parent.config, 'strip_vlan')
+        vid = test_param_get(parent.config, 'vid')
+
+        if add_vlan and strip_vlan:
+            parent.assertTrue(0, "Add and strip VLAN both specified")
+
+        if vid:
+            base_pkt_params['dl_vlan_enable'] = True
+            base_pkt_params['dl_vlan'] = vid
+            if 'dl_vlan' in mod_fields:
+                mod_pkt_params['dl_vlan'] = vid + 1
+
+        if add_vlan:
+            base_pkt_params['dl_vlan_enable'] = False
+            mod_pkt_params['dl_vlan_enable'] = True
+            mod_pkt_params['pktlen'] = base_pkt_params['pktlen'] + 4
+            mod_fields.append('pktlen')
+            mod_fields.append('dl_vlan_enable')
+            if 'dl_vlan' not in mod_fields:
+                mod_fields.append('dl_vlan')
+        elif strip_vlan:
+            base_pkt_params['dl_vlan_enable'] = True
+            mod_pkt_params['dl_vlan_enable'] = False
+            mod_pkt_params['pktlen'] = base_pkt_params['pktlen'] - 4
+            mod_fields.append('dl_vlan_enable')
+            mod_fields.append('pktlen')
+
+    # Build the ingress packet
+    ingress_pkt = simple_tcp_packet(**base_pkt_params)
+
+    # Build the expected packet, modifying the indicated fields
+    for item in mod_fields:
+        base_pkt_params[item] = mod_pkt_params[item]
+        act = action_generate(parent, item, mod_pkt_params)
+        if act:
+            new_actions.append(act)
+
+    expected_pkt = simple_tcp_packet(**base_pkt_params)
+
+    return (ingress_pkt, expected_pkt, new_actions)
+        
+def wildcard_all_set(match):
+    match.wildcards = ofp.OFPFW_ALL
+    match.nw_dst_mask = 0xffffffff
+    match.nw_src_mask = 0xffffffff
+    match.dl_dst_mask = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
+    match.dl_src_mask = [0xff, 0xff, 0xff, 0xff, 0xff, 0xff]
+    match.metadata_mask = 0xffffffffffffffff
+
+def skip_message_emit(parent, s):
+    """
+    Print out a 'skipped' ofp.message to stderr
+
+    @param s The string to print out to the log file
+    @param parent Must implement config and logger objects
+    """
+    global skipped_test_count
+
+    skipped_test_count += 1
+    logging.info("Skipping: " + s)
+    if parent.config["debug"] < logging.WARNING:
+        sys.stderr.write("(skipped) ")
+    else:
+        sys.stderr.write("(S)")
+
+def do_echo_request_reply_test(test,controller):
+        request = ofp.message.echo_request()
+        response, _ = controller.transact(request)
+        test.assertEqual(response.type, ofp.OFPT_ECHO_REPLY,
+                         'response is not echo_reply')
+        test.assertEqual(request.xid, response.xid,
+                         'response xid != request xid')
+        test.assertEqual(len(response.data), 0, 'response data non-empty')
+
+def match_all_generate():
+    match = ofp.ofp_match()
+    return match
+
+def simple_tcp_packet_w_mpls(
+                      dl_dst='00:01:02:03:04:05',
+                      dl_src='00:06:07:08:09:0a',
+                      mpls_type=0x8847,
+                      mpls_label=-1,
+                      mpls_tc=0,
+                      mpls_ttl=64,
+                      mpls_label_int=-1,
+                      mpls_tc_int=0,
+                      mpls_ttl_int=32,
+                      mpls_label_ext=-1,
+                      mpls_tc_ext=0,
+                      mpls_ttl_ext=128,
+                      ip_src='192.168.0.1',
+                      ip_dst='192.168.0.2',
+                      ip_tos=0,
+                      ip_ttl=192,
+                      tcp_sport=1234,
+                      tcp_dport=80
+                      ):
+    """
+    Return a simple dataplane TCP packet w/wo MPLS tags
+
+    Supports a few parameters:
+    @param len Length of packet in bytes w/o CRC
+    @param dl_dst Destinatino MAC
+    @param dl_src Source MAC
+    @param mpls_type MPLS type as ether type
+    @param mpls_label MPLS LABEL if not -1
+    @param mpls_tc MPLS TC
+    @param mpls_ttl MPLS TTL
+    @param mpls_label_int Inner MPLS LABEL if not -1. The shim will be added
+    inside of mpls_label shim.
+    @param mpls_tc_int Inner MPLS TC
+    @param mpls_ttl_int Inner MPLS TTL
+    @param mpls_label_ext External MPLS LABEL if not -1. The shim will be
+    added outside of mpls_label shim
+    @param mpls_tc_ext External MPLS TC
+    @param mpls_ttl_ext External MPLS TTL
+    @param ip_src IP source
+    @param ip_dst IP destination
+    @param ip_tos IP ToS
+    @param tcp_dport TCP destination port
+    @param ip_sport TCP source port
+
+    Generates a simple MPLS/IP/TCP request.  Users
+    shouldn't assume anything about this packet other than that
+    it is a valid ethernet/IP/TCP frame.
+    """
+    
+    mpls_tags = []
+    
+    if mpls_label_ext >= 0:
+        mpls_tags.append({'type': mpls_type, 'label': mpls_label_ext, 'tc': mpls_tc_ext, 'ttl': mpls_ttl_ext})
+        
+    if mpls_label >= 0:
+        mpls_tags.append({'type': mpls_type, 'label': mpls_label, 'tc': mpls_tc, 'ttl': mpls_ttl})
+        
+    if mpls_label_int >= 0:
+        mpls_tags.append({'type': mpls_type, 'label': mpls_label_int, 'tc': mpls_tc_int, 'ttl': mpls_ttl_int})
+    
+    pkt = simple_tcp_packet(dl_dst=dl_dst,
+                            dl_src=dl_src,
+                            mpls_tags=mpls_tags,
+                            ip_src=ip_src,
+                            ip_dst=ip_dst,
+                            ip_tos=ip_tos,  
+                            ip_ttl=ip_ttl,
+                            tcp_sport=tcp_sport,
+                            tcp_dport=tcp_dport)
+    return pkt
+    
+def flow_match_test_port_pair_mpls(parent, ing_port, egr_port, wildcards=0,
+                                   mpls_type=0x8847,
+                                   mpls_label=-1, mpls_tc=0,mpls_ttl=64,
+                                   mpls_label_int=-1, mpls_tc_int=0,
+                                   mpls_ttl_int=32,
+                                   ip_ttl=192,
+                                   exp_mpls_type=0x8847,
+                                   exp_mpls_label=-1, exp_mpls_tc=0,
+                                   exp_mpls_ttl=64,
+                                   exp_mpls_ttl_int=32,
+                                   exp_ip_ttl=192,
+                                   label_match=0, tc_match=0,
+                                   dl_type_match=ETHERTYPE_MPLS,
+                                   match_exp=True,
+                                   add_tag_exp=False,
+                                   exp_msg=ofp.OFPT_FLOW_REMOVED,
+                                   exp_msg_type=0, exp_msg_code=0,
+                                   pkt=None,
+                                   exp_pkt=None, action_list=None,
+                                   check_expire=False):
+    """
+    Flow match test on single packet w/ MPLS tags
+
+    Run test with packet through switch from ing_port to egr_port
+    See flow_match_test for parameter descriptions
+    """
+    logging.info("Pkt match test: " + str(ing_port) + " to " + str(egr_port))
+    logging.debug("  WC: " + hex(wildcards) + " MPLS: " +
+                    str(mpls_label) + " expire: " + str(check_expire))
+
+    if pkt is None:
+
+        pkt = simple_tcp_packet_w_mpls(mpls_type=mpls_type,
+                                       mpls_label=mpls_label,
+                                       mpls_tc=mpls_tc,
+                                       mpls_ttl=mpls_ttl,
+                                       mpls_label_int=mpls_label_int,
+                                       mpls_tc_int=mpls_tc_int,
+                                       mpls_ttl_int=mpls_ttl_int,
+                                       ip_ttl=ip_ttl)
+
+    if exp_pkt is None:
+        if add_tag_exp:
+            exp_pkt = simple_tcp_packet_w_mpls(
+                                           mpls_type=exp_mpls_type,
+                                           mpls_label_ext=exp_mpls_label,
+                                           mpls_tc_ext=exp_mpls_tc,
+                                           mpls_ttl_ext=exp_mpls_ttl,
+                                           mpls_label=mpls_label,
+                                           mpls_tc=mpls_tc,
+                                           mpls_ttl=mpls_ttl,
+                                           mpls_label_int=mpls_label_int,
+                                           mpls_tc_int=mpls_tc_int,
+                                           mpls_ttl_int=exp_mpls_ttl_int,
+                                           ip_ttl=exp_ip_ttl)
+        else:
+            if (exp_mpls_label < 0) and (mpls_label_int >= 0):
+                exp_pkt = simple_tcp_packet_w_mpls(
+                                           mpls_type=mpls_type,
+                                           mpls_label=mpls_label_int,
+                                           mpls_tc=mpls_tc_int,
+                                           mpls_ttl=exp_mpls_ttl_int,
+                                           ip_ttl=exp_ip_ttl)
+            else:
+                exp_pkt = simple_tcp_packet_w_mpls(
+                                           mpls_type=exp_mpls_type,
+                                           mpls_label=exp_mpls_label,
+                                           mpls_tc=exp_mpls_tc,
+                                           mpls_ttl=exp_mpls_ttl,
+                                           mpls_label_int=mpls_label_int,
+                                           mpls_tc_int=mpls_tc_int,
+                                           mpls_ttl_int=exp_mpls_ttl_int,
+                                           ip_ttl=exp_ip_ttl)
+    wildcards = (ofp.OFPFW_ALL & ~(ofp.OFPFW_DL_TYPE | ofp.OFPFW_MPLS_LABEL | ofp.OFPFW_MPLS_TC)) | wildcards
+
+    match = parse.packet_to_flow_match(pkt)
+    parent.assertTrue(match is not None, "Flow match from pkt failed")
+
+    match.mpls_label = label_match
+    match.mpls_tc = tc_match
+    match.wildcards = wildcards
+
+    match.dl_type = dl_type_match
+    match.nw_tos = 0
+    match.nw_proto = 0
+    match.nw_src = 0
+    match.nw_src_mask = 0xFFFFFFFF
+    match.nw_dst = 0
+    match.nw_dst_mask = 0xFFFFFFFF
+    match.tp_src = 0
+    match.tp_dst = 0
+
+    request = flow_msg_create(parent, pkt, ing_port=ing_port,
+                              wildcards=wildcards,
+                              match=match,
+                              egr_port=egr_port,
+                              action_list=action_list)
+
+    flow_msg_install(parent, request)
+
+    logging.debug("Send packet: " + str(ing_port) + " to " + str(egr_port))
+    #logging.debug(str(pkt).encode("hex"))
+    parent.dataplane.send(ing_port, str(pkt))
+
+    if match_exp:
+        receive_pkt_verify(parent, egr_port, exp_pkt)
+        if check_expire:
+            #@todo Not all HW supports both pkt and byte counters
+            flow_removed_verify(parent, request, pkt_count=1, byte_count=len(pkt))
+    else:
+        if exp_msg == ofp.OFPT_FLOW_REMOVED:
+            if check_expire:
+                flow_removed_verify(parent, request, pkt_count=0, byte_count=0)
+        elif exp_msg == ofp.OFPT_ERROR:
+            error_verify(parent, exp_msg_type, exp_msg_code)
+        else:
+            parent.assertTrue(0, "Rcv: Unexpected ofp.message: " + str(exp_msg))
+        (_, rcv_pkt, _) = parent.dataplane.poll(timeout=1)
+        parent.assertFalse(rcv_pkt is not None, "Packet on dataplane")
+
+def flow_match_test_mpls(parent, port_map, wildcards=0,
+                         mpls_type=0x8847,
+                         mpls_label=-1, mpls_tc=0, mpls_ttl=64,
+                         mpls_label_int=-1, mpls_tc_int=0, mpls_ttl_int=32,
+                         ip_ttl = 192,
+                         label_match=0, tc_match=0,
+                         dl_type_match=ETHERTYPE_MPLS,
+                         exp_mpls_type=0x8847,
+                         exp_mpls_label=-1, exp_mpls_tc=0, exp_mpls_ttl=64,
+                         exp_mpls_ttl_int=32,
+                         exp_ip_ttl=192,
+                         match_exp=True,
+                         add_tag_exp=False,
+                         exp_msg=ofp.OFPT_FLOW_REMOVED,
+                         exp_msg_type=0, exp_msg_code=0,
+                         pkt=None,
+                         exp_pkt=None, action_list=None, check_expire=False,
+                         max_test=0):
+    """
+    Run flow_match_test_port_pair on all port pairs
+
+    @param max_test If > 0 no more than this number of tests are executed.
+    @param parent Must implement controller, dataplane, assertTrue, assertEqual
+    and logger
+    @param wildcards For flow match entry
+    @param mpls_type MPLS type
+    @param mpls_label If not -1 create a pkt w/ MPLS tag
+    @param mpls_tc MPLS TC associated with MPLS label
+    @param mpls_ttl MPLS TTL associated with MPLS label
+    @param mpls_label_int If not -1 create a pkt w/ Inner MPLS tag
+    @param mpls_tc_int MPLS TC associated with Inner MPLS label
+    @param mpls_ttl_int MPLS TTL associated with Inner MPLS label
+    @param ip_ttl IP TTL
+    @param label_match Matching value for MPLS LABEL field
+    @param tc_match Matching value for MPLS TC field
+    @param exp_mpls_label Expected MPLS LABEL value. If -1, no MPLS expected
+    @param exp_mpls_tc Expected MPLS TC value
+    @param exp_mpls_ttl Expected MPLS TTL value
+    @param exp_mpls_ttl_int Expected Inner MPLS TTL value
+    @param ip_ttl Expected IP TTL
+    @param match_exp Set whether packet is expected to receive
+    @param add_tag_exp If True, expected_packet has an additional MPLS shim,
+    If not expected_packet's MPLS shim is replaced as specified
+    @param exp_msg Expected ofp.message
+    @param exp_msg_type Expected ofp.message type associated with the ofp.message
+    @param exp_msg_code Expected ofp.message code associated with the msg_type
+    @param pkt If not None, use this packet for ingress
+    @param exp_pkt If not None, use this as the expected output pkt; els use pkt
+    @param action_list Additional actions to add to flow mod
+    @param check_expire Check for flow expiration ofp.message
+    """
+    of_ports = port_map.keys()
+    of_ports.sort()
+    parent.assertTrue(len(of_ports) > 1, "Not enough ports for test")
+    test_count = 0
+
+    for ing_idx in range(len(of_ports)):
+        ingress_port = of_ports[ing_idx]
+        for egr_idx in range(len(of_ports)):
+            if egr_idx == ing_idx:
+                continue
+            egress_port = of_ports[egr_idx]
+            flow_match_test_port_pair_mpls(parent, ingress_port, egress_port,
+                                      wildcards=wildcards,
+                                      mpls_type=mpls_type,
+                                      mpls_label=mpls_label,
+                                      mpls_tc=mpls_tc,
+                                      mpls_ttl=mpls_ttl,
+                                      mpls_label_int=mpls_label_int,
+                                      mpls_tc_int=mpls_tc_int,
+                                      mpls_ttl_int=mpls_ttl_int,
+                                      ip_ttl=ip_ttl,
+                                      label_match=label_match,
+                                      tc_match=tc_match,
+                                      dl_type_match=dl_type_match,
+                                      exp_mpls_type=exp_mpls_type,
+                                      exp_mpls_label=exp_mpls_label,
+                                      exp_mpls_tc=exp_mpls_tc,
+                                      exp_mpls_ttl=exp_mpls_ttl,
+                                      exp_mpls_ttl_int=exp_mpls_ttl_int,
+                                      exp_ip_ttl=exp_ip_ttl,
+                                      match_exp=match_exp,
+                                      exp_msg=exp_msg,
+                                      exp_msg_type=exp_msg_type,
+                                      exp_msg_code=exp_msg_code,
+                                      add_tag_exp=add_tag_exp,
+                                      pkt=pkt, exp_pkt=exp_pkt,
+                                      action_list=action_list,
+                                      check_expire=check_expire)
+            test_count += 1
+            if (max_test > 0) and (test_count >= max_test):
+                logging.info("Ran " + str(test_count) + " tests; exiting")
+                return
+
+def flow_stats_get(parent, match_fields = None):
+    """ Get the flow_stats from the switch
+    Test the response to make sure it's really a flow_stats object
+    """
+    request = ofp.message.flow_stats_request()
+    request.out_port = ofp.OFPP_ANY
+    request.out_group = ofp.OFPG_ANY
+    request.table_id = 0xff
+    if match_fields != None:
+        request.match_fields = match_fields
+    response, _ = parent.controller.transact(request, timeout=2)
+    parent.assertTrue(response is not None, "Did not get response")
+    parent.assertTrue(isinstance(response,ofp.message.flow_stats_reply),
+                      "Expected a flow_stats_reply, but didn't get it")
+    return response