--- openflow-2009-07-02-2.h	2015-07-23 09:54:15.720479304 -0700
+++ openflow-2009-07-11.h	2015-07-23 09:54:15.724479304 -0700
@@ -635,7 +635,9 @@
     OFPFMFC_ALL_TABLES_FULL,    /* Flow not added because of full tables. */
     OFPFMFC_OVERLAP,            /* Attempted to add overlapping flow with
                                  * CHECK_OVERLAP flag set. */
-    OFPFMFC_EPERM               /* Permissions error. */
+    OFPFMFC_EPERM,              /* Permissions error. */
+    OFPFMFC_EMERG               /* Flow not added because of non-zero idle/hard
+                                 * timeout. */
 };
 
 /* OFPT_ERROR: Error message (datapath -> controller). */