diff --git a/src/python/of10/error.py b/src/python/of10/error.py
index 700338b..f545bc5 100644
--- a/src/python/of10/error.py
+++ b/src/python/of10/error.py
@@ -19,6 +19,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_HELLO_FAILED
         self.data = ""
 
@@ -66,6 +67,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_BAD_REQUEST
         self.data = ""
 
@@ -113,6 +115,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_BAD_ACTION
         self.data = ""
 
@@ -160,6 +163,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_FLOW_MOD_FAILED
         self.data = ""
 
@@ -207,6 +211,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_PORT_MOD_FAILED
         self.data = ""
 
@@ -254,6 +259,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.err_type = OFPET_QUEUE_OP_FAILED
         self.data = ""
 
diff --git a/src/python/of10/message.py b/src/python/of10/message.py
index 5b4ce02..6acb063 100644
--- a/src/python/of10/message.py
+++ b/src/python/of10/message.py
@@ -127,6 +127,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_BARRIER_REPLY
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -233,6 +234,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_BARRIER_REQUEST
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -340,6 +342,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ECHO_REPLY
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -460,6 +463,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ECHO_REQUEST
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -582,6 +586,7 @@
         ofp_error_msg.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_ERROR
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -707,6 +712,7 @@
         ofp_switch_features.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_FEATURES_REPLY
+        self.xid = None
         self.ports = []
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -826,6 +832,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_FEATURES_REQUEST
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -942,6 +949,7 @@
         ofp_flow_mod.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_FLOW_MOD
+        self.xid = None
         self.actions = []
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -1069,6 +1077,7 @@
         ofp_flow_removed.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_FLOW_REMOVED
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -1177,6 +1186,7 @@
         ofp_switch_config.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_GET_CONFIG_REPLY
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -1283,6 +1293,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_GET_CONFIG_REQUEST
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -1390,6 +1401,7 @@
         ofp_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_HELLO
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -1514,6 +1526,7 @@
         ofp_packet_in.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_PACKET_IN
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -1638,6 +1651,7 @@
         ofp_packet_out.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_PACKET_OUT
+        self.xid = None
         self.actions = []
         self.data = ""
         for (k, v) in kwargs.items():
@@ -1776,6 +1790,7 @@
         ofp_port_mod.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_PORT_MOD
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -1884,6 +1899,7 @@
         ofp_port_status.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_PORT_STATUS
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -1992,6 +2008,7 @@
         ofp_queue_get_config_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_QUEUE_GET_CONFIG_REPLY
+        self.xid = None
         self.queues = []
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -2110,6 +2127,7 @@
         ofp_queue_get_config_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_QUEUE_GET_CONFIG_REQUEST
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -2218,6 +2236,7 @@
         ofp_switch_config.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_SET_CONFIG
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -2326,6 +2345,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -2434,6 +2454,7 @@
         ofp_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         for (k, v) in kwargs.items():
             if hasattr(self, k):
                 setattr(self, k, v)
@@ -2542,6 +2563,7 @@
         ofp_vendor_header.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_VENDOR
+        self.xid = None
         self.data = ""
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -2765,6 +2787,7 @@
         ofp_aggregate_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_AGGREGATE
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -2813,6 +2836,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_AGGREGATE
         # stats: Array of type aggregate_stats_entry
         self.entries = []
@@ -2868,6 +2892,7 @@
         ofp_desc_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_DESC
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -2916,6 +2941,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_DESC
         # stats: Array of type desc_stats_entry
         self.entries = []
@@ -2971,6 +2997,7 @@
         ofp_flow_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_FLOW
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -3019,6 +3046,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_FLOW
         # stats: Array of type flow_stats_entry
         self.entries = []
@@ -3074,6 +3102,7 @@
         ofp_port_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_PORT
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -3122,6 +3151,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_PORT
         # stats: Array of type port_stats_entry
         self.entries = []
@@ -3177,6 +3207,7 @@
         ofp_queue_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_QUEUE
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -3225,6 +3256,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_QUEUE
         # stats: Array of type queue_stats_entry
         self.entries = []
@@ -3280,6 +3312,7 @@
         ofp_table_stats_request.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REQUEST
+        self.xid = None
         self.stats_type = OFPST_TABLE
         for (k, v) in kwargs.items():
             if hasattr(self, k):
@@ -3328,6 +3361,7 @@
         ofp_stats_reply.__init__(self)
         self.version = OFP_VERSION
         self.type = OFPT_STATS_REPLY
+        self.xid = None
         self.stats_type = OFPST_TABLE
         # stats: Array of type table_stats_entry
         self.entries = []