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path: root/net/radvd/files/patch-device-bsd44.c
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--- device-bsd44.c.orig 2015-11-19 13:58:52 UTC
+++ device-bsd44.c
@@ -116,6 +116,24 @@ int update_device_info(int sock, struct 
 
 int setup_allrouters_membership(int sock, struct Interface *iface)
 {
+   struct ipv6_mreq mreq;
+
+   memset(&mreq, 0, sizeof(mreq));
+   mreq.ipv6mr_interface = iface->props.if_index;
+
+   /* all-routers multicast address */
+   if (inet_pton(AF_INET6, "ff02::2",
+           &mreq.ipv6mr_multiaddr.s6_addr) != 1) {
+       flog(LOG_ERR, "inet_pton failed");
+       return (-1);
+   }
+
+   if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP,
+           &mreq, sizeof(mreq)) < 0) {
+       flog(LOG_ERR, "can't join ipv6-allrouters on %s", iface->props.name);
+       return (-1);
+   }
+
    return 0;
 }