[Ganglia-general] Multicast issue on systems with multiple interfaces

[Vladimir Vuksan]

We just upgraded our Ganglia cluster to 3.0.3 from 2.5.7. All of the systems have dual network interfaces. Most of the network traffic goes over eth1 interface whereas the control messages etc. go over eth0. In 2.5.7 we specified mcast_if to be eth0 and that works well. In 3.0.3 even though eth0 is specified multicast traffic goes over eth1. Only way we have been able to resolve it is to add a manual route for 239.0.0.0. Any clues about this ? Vladimir