diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 94fa6ae..b6a7c7b 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -541,7 +541,7 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
 				break;
 
 			if (addr_type & IPV6_ADDR_LINKLOCAL) {
-				if (!src_info->ipi6_ifindex)
+				if (!fl->oif)
 					return -EINVAL;
 				else {
 					dev = dev_get_by_index(&init_net, src_info->ipi6_ifindex);