--- fwsync/driver/fwsync_workers.c	2022/08/13 18:16:39	1.11
+++ fwsync/driver/fwsync_workers.c	2022/08/13 18:22:55	1.12
@@ -272,3 +272,30 @@ fwsync_state_sync(const void *arg, const void *extdata
 	free(pkt, M_FWSYNC);
 	return 0;
 }
+
+int
+fwsync_alias_sync(const void *arg, const void *extdata)
+{
+	struct fws_sndpkt *pkt;
+
+	DTRACE();
+
+	mtx_lock(&fws_mtx_n);
+	pkt = TAILQ_FIRST(&fwsync_natpkt);
+	if (pkt)
+		TAILQ_REMOVE(&fwsync_natpkt, pkt, sp_next);
+	mtx_unlock(&fws_mtx_n);
+
+	if (!pkt)	/* update queue is empty */
+		return 0;
+
+	if (!(fws_cfg.cfg.on & CFG_SYNC_EDGE)) {
+		free(pkt, M_FWSYNC);
+		return EAGAIN;
+	}
+
+	// TODO: xxx
+
+	free(pkt, M_FWSYNC);
+	return 0;
+}