From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 25 Mar 2012 12:42:10 +0000 (+0100)
Subject: Allow scoped addresses to be used for IPv6 multicast socket.
X-Git-Tag: release-1.0.18~7
X-Git-Url: https://git.tinc-vpn.org/git/browse?a=commitdiff_plain;h=e2d1b0b899ef66cd7ff227549e58b96c292f784e;p=tinc

Allow scoped addresses to be used for IPv6 multicast socket.
---

diff --git a/src/multicast_device.c b/src/multicast_device.c
index 495f8fc9..879eb663 100644
--- a/src/multicast_device.c
+++ b/src/multicast_device.c
@@ -119,7 +119,7 @@ static bool setup_device(void) {
 			struct sockaddr_in6 in6;
 			memcpy(&in6, ai->ai_addr, sizeof in6);
 			memcpy(&mreq.ipv6mr_multiaddr, &in6.sin6_addr, sizeof mreq.ipv6mr_multiaddr);
-			mreq.ipv6mr_interface = 0;
+			mreq.ipv6mr_interface = in6.sin6_scope_id;
 			if(setsockopt(device_fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof mreq)) {
 				logger(LOG_ERR, "Cannot join multicast group %s %s: %s", host, port, sockstrerror(sockerrno));
 				closesocket(device_fd);