linux bridges and multicast packets

hello all,

I am pretty new to linux networking and linux in general. I am trying to put up a virtualised network on ubuntu 12.04LTS VM.
As of now,I could create containers (lxc-create -t ubuntu -n <name> ), get LXC containers working and am running a routing engine on each of the container . Thus each container is now functional as a virtual router.
Both the containers have the lxcbr0 as default gateway (10.0.3.1)
I can ping container1 to container2 and vice versa, but am unable to run any routing protocols.
with the help of wireshark, I could figure out that the routing multicast packets from container1 and container2 are reaching the bridge and nothing seems to be happening from there on. I am not too sure, but looks like the linux bridge lxcbr0 is not forwarding the multicast packets. This is a little confusing to me as I thought linux bridges work like hardware switches and thus both container1 and container2 are on same LAN.

How can I get the bridge to do multicasting?

IP details are attached.
bridge.png

containers.png

Attached Images

• containers.png (61.4 KB)
• bridge.png (29.0 KB)