--- fwsync/driver/fwsync_workers.c	2022/08/11 21:59:05	1.10
+++ fwsync/driver/fwsync_workers.c	2022/08/19 09:37:33	1.18
@@ -1,7 +1,29 @@
-/*************************************************************************
-* (C) 2022 CloudSigma AG - Sofia/Bulgaria
-*  by Michael Pounov <misho@elwix.org>
-**************************************************************************/
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2022 Michael Pounov <misho@elwix.org>, CloudSigma AG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
 #include "fwsync.h"
 
 
@@ -31,8 +53,22 @@ fwsync_add_state(const struct fws_proto *pkt)
 int
 fwsync_add_alias(const struct fws_proto *pkt)
 {
+	struct fws_sndpkt *p;
+
 	DTRACE();
 
+	if (!pkt || pkt->fws_addrtype == 1 || pkt->fws_addrtype == 6)
+		return 0;	/* skip packet */
+
+	p = malloc(sizeof(struct fws_sndpkt), M_FWSYNC, M_NOWAIT | M_ZERO);
+	if (!p) {
+		return ENOMEM;
+	} else
+		memcpy(&p->sp_proto, pkt, sizeof(struct fws_proto));
+
+	mtx_lock(&fws_mtx_n);
+	TAILQ_INSERT_TAIL(&fwsync_natpkt, p, sp_next);
+	mtx_unlock(&fws_mtx_n);
 	return 0;
 }
 
@@ -256,5 +292,41 @@ fwsync_state_sync(const void *arg, const void *extdata
 			pkt->sp_proto.fws_kidx, pkt->sp_proto.fws_cmdtype);
 
 	free(pkt, M_FWSYNC);
+	return 0;
+}
+
+int
+fwsync_alias_sync(const void *arg, const void *extdata)
+{
+	struct fws_sndpkt *pkt;
+	const struct cfg_nat *t = arg;
+
+	DTRACE();
+
+	mtx_lock(&fws_mtx_n);
+	while ((pkt = TAILQ_FIRST(&fwsync_natpkt))) {
+		TAILQ_REMOVE(&fwsync_natpkt, pkt, sp_next);
+
+		if (!(fws_cfg.cfg.on & CFG_SYNC_EDGE)) {
+			free(pkt, M_FWSYNC);
+			continue;
+		}
+
+		if (t) {
+			LIBALIAS_LOCK(t->lib);
+			AddLink(t->lib, pkt->sp_proto.fws_saddr, 
+					pkt->sp_proto.fws_daddr, 
+					pkt->sp_proto.fws_aaddr, 
+					pkt->sp_proto.fws_sport, 
+					pkt->sp_proto.fws_dport, 
+					pkt->sp_proto.fws_aport, 
+					pkt->sp_proto.fws_linktype | LINK_SYNC_MASK);
+			LIBALIAS_UNLOCK(t->lib);
+		}
+
+		free(pkt, M_FWSYNC);
+	}
+	mtx_unlock(&fws_mtx_n);
+
 	return 0;
 }