FreeRadius deployment

Hi, I'm planning a FreeRadius deployment where the same machine will be running two FreeRADIUS instances, each one listening in different interfaces with different ip adresses. However, I had been looking in the documentation forthis possibility and found no information about it, so I don't know whether is possible or not. Has anyone try this? I think that I wiil need to different radiusd with different radius.conf, users, db, accounting files, but I'm not really sure. So far I had been able to launch two radiusd using the -i and -p flags. Regards, Pablo Cuesta