It seems that the IPv6 multicast parameters only take effect when bind()
is called, so I've moved the mcast recv socket bind() to the bottom of
totemudp_build_sockets_ip().
Signed-off-by: Christine Caulfield <ccaulfie@xxxxxxxxxx>
diff --git a/exec/totemudp.c b/exec/totemudp.c
index 8ed87ce..31d0570 100644
--- a/exec/totemudp.c
+++ b/exec/totemudp.c
@@ -761,18 +761,6 @@ static int totemudp_build_sockets_ip (
}
/*
- * Bind to multicast socket used for multicast receives
- */
- totemip_totemip_to_sockaddr_convert(mcast_address,
- instance->totem_interface->ip_port, &sockaddr, &addrlen);
- res = bind (sockets->mcast_recv, (struct sockaddr *)&sockaddr, addrlen);
- if (res == -1) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
- "Unable to bind the socket to receive multicast packets");
- return (-1);
- }
-
- /*
* Create local multicast loop socket
*/
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sockets->local_mcast_loop) == -1) {
@@ -1054,6 +1042,20 @@ static int totemudp_build_sockets_ip (
break;
}
+ /*
+ * Bind to multicast socket used for multicast receives
+ * This needs to happen after all of the multicast setsockopt() calls
+ * as the kernel seems to only put them into effect (for IPV6) when bind()
+ * is called.
+ */
+ totemip_totemip_to_sockaddr_convert(mcast_address,
+ instance->totem_interface->ip_port, &sockaddr, &addrlen);
+ res = bind (sockets->mcast_recv, (struct sockaddr *)&sockaddr, addrlen);
+ if (res == -1) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
+ "Unable to bind the socket to receive multicast packets");
+ return (-1);
+ }
return 0;
}
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