diff --git a/sys/netinet/ip_mroute.c b/sys/netinet/ip_mroute.c
--- a/sys/netinet/ip_mroute.c
+++ b/sys/netinet/ip_mroute.c
@@ -317,7 +317,7 @@
 static int	del_bw_upcall(struct bw_upcall *);
 static int	del_mfc(struct mfcctl2 *);
 static int	del_vif(vifi_t);
-static int	del_vif_locked(vifi_t, struct ifnet **);
+static int	del_vif_locked(vifi_t, struct ifnet **, struct ifnet **);
 static void	expire_bw_upcalls_send(void *);
 static void	expire_mfc(struct mfc *);
 static void	expire_upcalls(void *);
@@ -618,7 +618,7 @@
 {
 	vifi_t vifi;
 	u_long i, vifi_cnt = 0;
-	struct ifnet *free_ptr;
+	struct ifnet *free_ptr, *multi_leave;
 
 	MRW_WLOCK();
 
@@ -635,6 +635,7 @@
 	 * 3. Expire any matching multicast forwarding cache entries.
 	 * 4. Free vif state. This should disable ALLMULTI on the interface.
 	 */
+restart:
 	for (vifi = 0; vifi < V_numvifs; vifi++) {
 		if (V_viftable[vifi].v_ifp != ifp)
 			continue;
@@ -647,9 +648,15 @@
 				}
 			}
 		}
-		del_vif_locked(vifi, &free_ptr);
+		del_vif_locked(vifi, &multi_leave, &free_ptr);
 		if (free_ptr != NULL)
 			vifi_cnt++;
+		if (multi_leave) {
+			MRW_WUNLOCK();
+			if_allmulti(multi_leave, 0);
+			MRW_WLOCK();
+			goto restart;
+		}
 	}
 
 	MRW_WUNLOCK();
@@ -998,11 +1005,12 @@
  * Delete a vif from the vif table
  */
 static int
-del_vif_locked(vifi_t vifi, struct ifnet **ifp_free)
+del_vif_locked(vifi_t vifi, struct ifnet **ifp_multi_leave, struct ifnet **ifp_free)
 {
 	struct vif *vifp;
 
 	*ifp_free = NULL;
+	*ifp_multi_leave = NULL;
 
 	MRW_WLOCK_ASSERT();
 
@@ -1015,7 +1023,7 @@
 	}
 
 	if (!(vifp->v_flags & (VIFF_TUNNEL | VIFF_REGISTER)))
-		if_allmulti(vifp->v_ifp, 0);
+		*ifp_multi_leave = vifp->v_ifp;
 
 	if (vifp->v_flags & VIFF_REGISTER) {
 		V_reg_vif_num = VIFI_INVALID;
@@ -1045,14 +1053,17 @@
 del_vif(vifi_t vifi)
 {
 	int cc;
-	struct ifnet *free_ptr;
+	struct ifnet *free_ptr, *multi_leave;
 
 	MRW_WLOCK();
-	cc = del_vif_locked(vifi, &free_ptr);
+	cc = del_vif_locked(vifi, &multi_leave, &free_ptr);
 	MRW_WUNLOCK();
 
-	if (free_ptr)
+	if (multi_leave)
+		if_allmulti(multi_leave, 0);
+	if (free_ptr) {
 		if_free(free_ptr);
+	}
 
 	return cc;
 }