mpls: Add support for IPv6 tunnels

Add support for IPv6 tunnel devices in AF_MPLS.
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mpls/af_mpls.c

@@ -1593,7 +1593,8 @@ static int mpls_dev_notify(struct notifier_block *this, unsigned long event,
 		    dev->type == ARPHRD_IPGRE ||
 		    dev->type == ARPHRD_IP6GRE ||
 		    dev->type == ARPHRD_SIT ||
-		    dev->type == ARPHRD_TUNNEL) {
+		    dev->type == ARPHRD_TUNNEL ||
+		    dev->type == ARPHRD_TUNNEL6) {
 			mdev = mpls_add_dev(dev);
 			if (IS_ERR(mdev))
 				return notifier_from_errno(PTR_ERR(mdev));