From 6ddb505f6816e081a8edf7ac854bd791faf67666 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Thu, 6 Aug 2015 16:07:07 +0200
Subject: [PATCH] minissdpd: disable multicast loop

---
 minissdpd/Changelog.txt    | 5 ++++-
 minissdpd/openssdpsocket.c | 8 +++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/minissdpd/Changelog.txt b/minissdpd/Changelog.txt
index cd53c27..1cf6e51 100644
--- a/minissdpd/Changelog.txt
+++ b/minissdpd/Changelog.txt
@@ -1,4 +1,7 @@
-$Id: Changelog.txt,v 1.42 2015/08/06 13:16:58 nanard Exp $
+$Id: Changelog.txt,v 1.43 2015/08/06 14:05:49 nanard Exp $
+
+2015/08/06:
+	disable multicast loop
 
 VERSION 1.4:
 
diff --git a/minissdpd/openssdpsocket.c b/minissdpd/openssdpsocket.c
index 0fe2162..b525e27 100644
--- a/minissdpd/openssdpsocket.c
+++ b/minissdpd/openssdpsocket.c
@@ -1,4 +1,4 @@
-/* $Id: openssdpsocket.c,v 1.16 2015/07/21 15:39:37 nanard Exp $ */
+/* $Id: openssdpsocket.c,v 1.17 2015/08/06 14:05:37 nanard Exp $ */
 /* MiniUPnP project
  * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
  * (c) 2006-2015 Thomas Bernard
@@ -106,6 +106,7 @@ OpenAndConfSSDPReceiveSocket(int ipv6, unsigned char ttl)
 {
 	int s;
 	int opt = 1;
+	unsigned char loopchar = 0;
 #ifdef ENABLE_IPV6
 	struct sockaddr_storage sockname;
 #else /* ENABLE_IPV6 */
@@ -196,6 +197,11 @@ OpenAndConfSSDPReceiveSocket(int ipv6, unsigned char ttl)
 	sockname_len = sizeof(struct sockaddr_in);
 #endif /* ENABLE_IPV6 */
 
+	if(setsockopt(s, IPPROTO_IP, IP_MULTICAST_LOOP, (char *)&loopchar, sizeof(loopchar)) < 0)
+	{
+		syslog(LOG_WARNING, "setsockopt(IP_MULTICAST_LOOP): %m");
+	}
+
 	if(setsockopt(s, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0)
 	{
 		syslog(LOG_WARNING, "setsockopt(IP_MULTICAST_TTL): %m");