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-rw-r--r--net/ipv6/udp.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 38390dd1963..84b1a296eec 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));