1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 38390dd19636..84b1a296eecb 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -793,6 +793,9 @@ do_udp_sendmsg:
         if (!fl.oif)
                 fl.oif = sk->sk_bound_dev_if;
 
+        if (!fl.oif)
+                fl.oif = np->sticky_pktinfo.ipi6_ifindex;
+
         if (msg->msg_controllen) {
                 opt = &opt_space;
                 memset(opt, 0, sizeof(struct ipv6_txoptions));