1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 4f96b5c63685..8aebf8f90436 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1130,7 +1130,8 @@ do_udp_sendmsg:
         if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr)) {
                 fl6.flowi6_oif = np->mcast_oif;
                 connected = 0;
-        }
+        } else if (!fl6.flowi6_oif)
+                fl6.flowi6_oif = np->ucast_oif;
 
         security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));