--- zzzz-none-000/linux-3.18.24/include/uapi/linux/icmpv6.h	2015-10-31 20:39:51.000000000 +0000
+++ rtl96-5690pro-762/linux-3.18.24/include/uapi/linux/icmpv6.h	2024-08-14 08:36:37.000000000 +0000
@@ -88,6 +88,8 @@
 #define ICMPV6_PKT_TOOBIG		2
 #define ICMPV6_TIME_EXCEED		3
 #define ICMPV6_PARAMPROB		4
+/* RTK for RFC 7084*/
+#define ICMPV6_POLICY_FAIL		5
 
 #define ICMPV6_INFOMSG_MASK		0x80