--- openflow-2011-10-28.h	2015-07-23 09:54:16.788479347 -0700
+++ openflow-2011-10-28-2.h	2015-07-23 09:54:16.796479348 -0700
@@ -723,6 +723,17 @@
 #define OXM_OF_IPV6_DST    OXM_HEADER  (0x8000, OFPXMT_OFB_IPV6_DST, 16)
 #define OXM_OF_IPV6_DST_W  OXM_HEADER_W(0x8000, OFPXMT_OFB_IPV6_DST, 16)
 
+/* The IPv6 Flow Label
+ *
+ * Prereqs:
+ *   OXM_OF_ETH_TYPE must match 0x86dd exactly
+ *
+ * Format: 32-bit integer with 12 most-significant bits forced to 0.
+ * Only the lower 20 bits have meaning.
+ *
+ * Masking: Maskable. */
+#define OXM_OF_IPV6_FLABEL   OXM_HEADER  (0x8000, OFPXMT_OFB_IPV6_FLABEL, 4)
+
 /* The type or code in the ICMPv6 header.
  *
  * Prereqs: