Index: sys/netgraph/ng_bridge.c
===================================================================
--- sys/netgraph/ng_bridge.c
+++ sys/netgraph/ng_bridge.c
@@ -138,7 +138,7 @@
 	u_char		addr[6];	/* ethernet address */
 	link_p		link;		/* link where addr can be found */
 	u_int16_t	age;		/* seconds ago entry was created */
-	u_int16_t	staleness;	/* seconds ago host last heard from */
+	counter_u64_t	staleness;	/* seconds ago host last heard from */
 	SLIST_ENTRY(ng_bridge_host)	next;	/* next entry in bucket */
 };
 
@@ -587,7 +587,8 @@
 					       host->addr,
 					       sizeof(ary->hosts[i].addr));
 					ary->hosts[i].age       = host->age;
-					ary->hosts[i].staleness = host->staleness;
+					ary->hosts[i].staleness =
+					    counter_u64_fetch(host->staleness);
 					strncpy(ary->hosts[i].hook,
 						NG_HOOK_NAME(host->link->hook),
 						sizeof(ary->hosts[i].hook));
@@ -740,7 +741,7 @@
 	/* Look up packet's source Ethernet address in hashtable */
 	if ((host = ng_bridge_get(priv, eh->ether_shost)) != NULL) {
 		/* Update time since last heard from this host */
-		host->staleness = 0;
+		counter_u64_zero(host->staleness);
 
 		/* Did host jump to a different link? */
 		if (host->link != ctx.incoming) {
@@ -962,8 +963,12 @@
 		return (0);
 	bcopy(addr, host->addr, ETHER_ADDR_LEN);
 	host->link = link;
-	host->staleness = 0;
 	host->age = 0;
+	host->staleness = counter_u64_alloc(M_NOWAIT);
+	if (host->staleness == NULL) {
+		free(host, M_NETGRAPH_BRIDGE);
+		return (0);
+	}
 
 	/* Add new element to hash bucket */
 	SLIST_INSERT_HEAD(&priv->tab[bucket], host, next);
@@ -1054,6 +1059,7 @@
 
 			if (link == NULL || host->link == link) {
 				*hptr = SLIST_NEXT(host, next);
+				counter_u64_free(host->staleness);
 				free(host, M_NETGRAPH_BRIDGE);
 				priv->numHosts--;
 			} else
@@ -1104,8 +1110,11 @@
 			struct ng_bridge_host *const host = *hptr;
 
 			/* Remove hosts we haven't heard from in a while */
-			if (++host->staleness >= priv->conf.maxStaleness) {
+			counter_u64_add(host->staleness, 1);
+			if (counter_u64_fetch(host->staleness) >=
+			    priv->conf.maxStaleness) {
 				*hptr = SLIST_NEXT(host, next);
+				counter_u64_free(host->staleness);
 				free(host, M_NETGRAPH_BRIDGE);
 				priv->numHosts--;
 			} else {