openflow_input: add bsn_port_generation_id extension
diff --git a/openflow_input/standard-1.4 b/openflow_input/standard-1.4
index edcc781..18388bd 100644
--- a/openflow_input/standard-1.4
+++ b/openflow_input/standard-1.4
@@ -880,7 +880,7 @@
     uint16_t type == 0xffff;
     uint16_t length;
     uint32_t experimenter == ?;
-    uint32_t exp_type;
+    //uint32_t exp_type;
 };
 
 struct of_port_desc {