--- openflow-2013-01-16.h	2015-07-23 09:54:17.296479368 -0700
+++ openflow-2013-01-18.h	2015-07-23 09:54:17.304479368 -0700
@@ -1773,6 +1773,7 @@
     OFPBPC_BAD_EXPERIMENTER   = 5,  /* Unknown experimenter id specified. */
     OFPBPC_BAD_EXP_TYPE       = 6,  /* Unknown exp_type for experimenter id. */
     OFPBPC_BAD_EXP_VALUE      = 7,  /* Unknown value for experimenter id. */
+    OFPBPC_EPERM              = 8,  /* Permissions error. */
 };
 
 /* OFPT_ERROR: Error message (datapath -> controller). */