X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fmulticast_device.c;fp=src%2Fmulticast_device.c;h=879eb663d3a5ef0e553e40ab142006e98ff55ee0;hp=495f8fc995835805a52f4c390924c32e7660095a;hb=e2d1b0b899ef66cd7ff227549e58b96c292f784e;hpb=251204063255d95910f9a079015e2f9b428fd983

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);