diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 35d2b0e..4bc25b4 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1152,7 +1152,7 @@
 		return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
 
 	sk = __udp4_lib_lookup(saddr, uh->source, daddr, uh->dest,
-			       skb->dev->ifindex, udptable        );
+			       inet_iif(skb), udptable);
 
 	if (sk != NULL) {
 		int ret = udp_queue_rcv_skb(sk, skb);