Index: sys/net/if_vlan.c
===================================================================
--- sys/net/if_vlan.c
+++ sys/net/if_vlan.c
@@ -1349,7 +1349,7 @@
 	struct epoch_tracker et;
 	struct ifvlantrunk *trunk;
 	struct ifnet *ifp;
-	int error = 0;
+	int error = 0, update_lladdr;
 
 	/*
 	 * We can handle non-ethernet hardware types as long as
@@ -1459,11 +1459,14 @@
 	 * Set up our interface address to reflect the underlying
 	 * physical interface's.
 	 */
+	update_lladdr = memcmp(IF_LLADDR(p), IF_LLADDR(ifp), p->if_addrlen);
 	bcopy(IF_LLADDR(p), IF_LLADDR(ifp), p->if_addrlen);
 	((struct sockaddr_dl *)ifp->if_addr->ifa_addr)->sdl_alen =
 	    p->if_addrlen;
 
 	TASK_INIT(&ifv->lladdr_task, 0, vlan_lladdr_fn, ifv);
+	if (update_lladdr != 0)
+		taskqueue_enqueue(taskqueue_thread, &ifv->lladdr_task);
 
 	/* We are ready for operation now. */
 	ifp->if_drv_flags |= IFF_DRV_RUNNING;