--- fwsync/driver/fwsync_mod.c	2022/08/10 00:03:50	1.6
+++ fwsync/driver/fwsync_mod.c	2022/08/13 18:16:39	1.7
@@ -26,8 +26,8 @@ struct cfg_sync fws_cfg;
 struct task fws_sndpkt_task;
 struct taskqueue *fws_tq;
 struct callout fws_co;
-struct mtx fws_mtx_c, fws_mtx_e, fws_mtx_u;
-fwsync_sndpkt_t fwsync_sndpkt, fwsync_updpkt; 
+struct mtx fws_mtx_c, fws_mtx_e, fws_mtx_u, fws_mtx_n;
+fwsync_sndpkt_t fwsync_sndpkt, fwsync_updpkt, fwsync_natpkt; 
 
 SYSCTL_NODE(_net_inet_ip, IFT_FWSYNC, fwsync, CTLFLAG_RW, 0, "IPFW Sync - Sync firewall states");
 SYSCTL_INT(_net_inet_ip_fwsync, OID_AUTO, debug, CTLFLAG_RW, &fwsync_debug, 0, "Debug driver");
@@ -57,6 +57,14 @@ fws_fini(void *arg)
 		taskqueue_free(fws_tq);
 	}
 
+	mtx_lock(&fws_mtx_n);
+	while (!TAILQ_EMPTY(&fwsync_natpkt)) {
+		p = TAILQ_FIRST(&fwsync_natpkt);
+		TAILQ_REMOVE(&fwsync_natpkt, p, sp_next);
+		free(p, M_FWSYNC);
+	}
+	mtx_unlock(&fws_mtx_n);
+
 	mtx_lock(&fws_mtx_u);
 	while (!TAILQ_EMPTY(&fwsync_updpkt)) {
 		p = TAILQ_FIRST(&fwsync_updpkt);
@@ -76,6 +84,7 @@ fws_fini(void *arg)
 	mtx_destroy(&fws_mtx_c);
 	mtx_destroy(&fws_mtx_e);
 	mtx_destroy(&fws_mtx_u);
+	mtx_destroy(&fws_mtx_n);
 
 	fwsync_hooked = 0;
 
@@ -109,9 +118,11 @@ fws_init(void *arg)
 
 	TAILQ_INIT(&fwsync_sndpkt);
 	TAILQ_INIT(&fwsync_updpkt);
+	TAILQ_INIT(&fwsync_natpkt);
 
 	/* mutexes */
-	mtx_init(&fws_mtx_u, "fwsync mtx update", NULL, MTX_DEF);
+	mtx_init(&fws_mtx_n, "fwsync mtx alias", NULL, MTX_DEF);
+	mtx_init(&fws_mtx_u, "fwsync mtx dynamic", NULL, MTX_DEF);
 	mtx_init(&fws_mtx_e, "fwsync mtx edge", NULL, MTX_DEF);
 	mtx_init(&fws_mtx_c, "fwsync mtx collector", NULL, MTX_DEF);