diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index e1a10b0..ea5a13e 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -490,6 +490,7 @@
 	u32 user;
 	const struct in6_addr *src;
 	const struct in6_addr *dst;
+	int iif;
 	u8 ecn;
 };