--- zzzz-none-000/linux-4.9.279/include/net/addrconf.h	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/include/net/addrconf.h	2023-02-08 11:43:43.000000000 +0000
@@ -90,6 +90,11 @@
 		      u32 banned_flags);
 int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
 		    u32 banned_flags);
+#ifdef CONFIG_INTEL_NS_DEVICE_FILTER
+extern int intel_ipv6_ns_filter(struct net_device *dev,
+				const struct in6_addr* dst_addr,
+				unsigned char banned_flags);
+#endif
 int ipv4_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,
 			 bool match_wildcard);
 int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,