1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index c0dda6fc0921..6358e35d74b7 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2842,6 +2842,9 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
                         dev->mtu = lowerdev->mtu - (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM);
 
                 needed_headroom = lowerdev->hard_header_len;
+        } else if (vxlan_addr_multicast(&dst->remote_ip)) {
+                pr_info("multicast destination requires interface to be specified\n");
+                return -EINVAL;
         }
 
         if (conf->mtu) {