--- openflow-2012-10-09.h	2015-07-23 09:54:17.196479364 -0700
+++ openflow-2013-03-25.h	2015-07-23 09:54:17.204479364 -0700
@@ -68,7 +68,7 @@
 /* The most significant bit being set in the version field indicates an
  * experimental OpenFlow version.
  */
-#define OFP_VERSION   0x05
+#define OFP_VERSION   0x04
 
 #define OFP_MAX_TABLE_NAME_LEN 32
 #define OFP_MAX_PORT_NAME_LEN  16