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-rw-r--r--net/ipv4/route.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a01efa062f6b..8ca6bcab7b03 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1050,6 +1050,11 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
struct flowi4 fl4;
ip_rt_build_flow_key(&fl4, sk, skb);
+
+ /* Don't make lookup fail for bridged encapsulations */
+ if (skb && netif_is_any_bridge_port(skb->dev))
+ fl4.flowi4_oif = 0;
+
__ip_rt_update_pmtu(rt, &fl4, mtu);
}