--- openflow-2012-06-22.h	2015-07-23 09:54:17.340479370 -0700
+++ openflow-2012-12-05.h	2015-07-23 09:54:17.344479370 -0700
@@ -1426,6 +1426,7 @@
     OFPRR_HARD_TIMEOUT = 1,     /* Time exceeded hard_timeout. */
     OFPRR_DELETE       = 2,     /* Evicted by a DELETE flow mod. */
     OFPRR_GROUP_DELETE = 3,     /* Group was removed. */
+    OFPRR_METER_DELETE = 4,     /* Meter was removed. */
 };
 
 /* Flow removed (datapath -> controller). */