diff --git a/src/python/loxi/of13/instruction_id.py b/src/python/loxi/of13/instruction_id.py
index 5580f27..49157e6 100644
--- a/src/python/loxi/of13/instruction_id.py
+++ b/src/python/loxi/of13/instruction_id.py
@@ -77,7 +77,6 @@
         packed = []
         packed.append(struct.pack("!H", self.type))
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -90,7 +89,6 @@
         _len = reader.read("!H")[0]
         orig_reader = reader
         reader = orig_reader.slice(_len - (2 + 2))
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -178,7 +176,6 @@
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
         packed.append(struct.pack("!L", self.experimenter))
         packed.append(struct.pack("!L", self.subtype))
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -199,7 +196,6 @@
         _experimenter = reader.read("!L")[0]
         assert(_experimenter == 6035143)
         obj.subtype = reader.read("!L")[0]
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -231,7 +227,6 @@
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
         packed.append(struct.pack("!L", self.experimenter))
         packed.append(struct.pack("!L", self.subtype))
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -248,7 +243,6 @@
         assert(_experimenter == 6035143)
         _subtype = reader.read("!L")[0]
         assert(_subtype == 1)
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -265,6 +259,52 @@
 
 bsn.subtypes[1] = bsn_arp_offload
 
+class bsn_deny(bsn):
+    type = 65535
+    experimenter = 6035143
+    subtype = 5
+
+    def __init__(self):
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.subtype))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        obj = bsn_deny()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _len = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_len - (2 + 2))
+        _experimenter = reader.read("!L")[0]
+        assert(_experimenter == 6035143)
+        _subtype = reader.read("!L")[0]
+        assert(_subtype == 5)
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("bsn_deny {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+            q.breakable()
+        q.text('}')
+
+bsn.subtypes[5] = bsn_deny
+
 class bsn_dhcp_offload(bsn):
     type = 65535
     experimenter = 6035143
@@ -279,7 +319,6 @@
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
         packed.append(struct.pack("!L", self.experimenter))
         packed.append(struct.pack("!L", self.subtype))
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -296,7 +335,6 @@
         assert(_experimenter == 6035143)
         _subtype = reader.read("!L")[0]
         assert(_subtype == 2)
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -313,6 +351,52 @@
 
 bsn.subtypes[2] = bsn_dhcp_offload
 
+class bsn_disable_split_horizon_check(bsn):
+    type = 65535
+    experimenter = 6035143
+    subtype = 3
+
+    def __init__(self):
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.subtype))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        obj = bsn_disable_split_horizon_check()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _len = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_len - (2 + 2))
+        _experimenter = reader.read("!L")[0]
+        assert(_experimenter == 6035143)
+        _subtype = reader.read("!L")[0]
+        assert(_subtype == 3)
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("bsn_disable_split_horizon_check {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+            q.breakable()
+        q.text('}')
+
+bsn.subtypes[3] = bsn_disable_split_horizon_check
+
 class bsn_disable_src_mac_check(bsn):
     type = 65535
     experimenter = 6035143
@@ -327,7 +411,6 @@
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
         packed.append(struct.pack("!L", self.experimenter))
         packed.append(struct.pack("!L", self.subtype))
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -344,7 +427,6 @@
         assert(_experimenter == 6035143)
         _subtype = reader.read("!L")[0]
         assert(_subtype == 0)
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -361,6 +443,52 @@
 
 bsn.subtypes[0] = bsn_disable_src_mac_check
 
+class bsn_permit(bsn):
+    type = 65535
+    experimenter = 6035143
+    subtype = 4
+
+    def __init__(self):
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.subtype))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        obj = bsn_permit()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _len = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_len - (2 + 2))
+        _experimenter = reader.read("!L")[0]
+        assert(_experimenter == 6035143)
+        _subtype = reader.read("!L")[0]
+        assert(_subtype == 4)
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("bsn_permit {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+            q.breakable()
+        q.text('}')
+
+bsn.subtypes[4] = bsn_permit
+
 class clear_actions(instruction_id):
     type = 5
 
@@ -371,7 +499,6 @@
         packed = []
         packed.append(struct.pack("!H", self.type))
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -384,7 +511,6 @@
         _len = reader.read("!H")[0]
         orig_reader = reader
         reader = orig_reader.slice(_len - (2 + 2))
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -411,7 +537,6 @@
         packed = []
         packed.append(struct.pack("!H", self.type))
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
-        packed.append('\x00' * 3)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -424,7 +549,6 @@
         _len = reader.read("!H")[0]
         orig_reader = reader
         reader = orig_reader.slice(_len - (2 + 2))
-        reader.skip(3)
         return obj
 
     def __eq__(self, other):
@@ -489,7 +613,6 @@
         packed = []
         packed.append(struct.pack("!H", self.type))
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -502,7 +625,6 @@
         _len = reader.read("!H")[0]
         orig_reader = reader
         reader = orig_reader.slice(_len - (2 + 2))
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):
@@ -529,7 +651,6 @@
         packed = []
         packed.append(struct.pack("!H", self.type))
         packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
-        packed.append('\x00' * 4)
         length = sum([len(x) for x in packed])
         packed[1] = struct.pack("!H", length)
         return ''.join(packed)
@@ -542,7 +663,6 @@
         _len = reader.read("!H")[0]
         orig_reader = reader
         reader = orig_reader.slice(_len - (2 + 2))
-        reader.skip(4)
         return obj
 
     def __eq__(self, other):