--- openflow-2013-09-13.h	2015-07-23 09:54:17.576479379 -0700
+++ openflow-2013-11-27.h	2015-07-23 09:54:17.580479380 -0700
@@ -953,8 +953,10 @@
  * Format: 32-bit integer with 12 most-significant bits forced to 0.
  * Only the lower 20 bits have meaning.
  *
- * Masking: Not maskable. */
+ * Masking: Arbitrary masks.
+ */
 #define OXM_OF_IPV6_FLABEL   OXM_HEADER  (0x8000, OFPXMT_OFB_IPV6_FLABEL, 4)
+#define OXM_OF_IPV6_FLABEL_W OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV6_FLABEL, 4)
 
 /* The type or code in the ICMPv6 header.
  *