diff --git a/include/uapi/linux/icmpv6.h b/include/uapi/linux/icmpv6.h
index c1661febc2dc4841304bb678e235475b79fa8ec1..0564fd7ccde4180da7911f473bf2e26f04c2051e 100644
--- a/include/uapi/linux/icmpv6.h
+++ b/include/uapi/linux/icmpv6.h
@@ -138,6 +138,7 @@ struct icmp6hdr {
 #define ICMPV6_HDR_FIELD		0
 #define ICMPV6_UNK_NEXTHDR		1
 #define ICMPV6_UNK_OPTION		2
+#define ICMPV6_HDR_INCOMP		3
 
 /*
  *	constants for (set|get)sockopt