Q:

How do I set up several interfaces all bridged onto eth0?

I have found several guides to bridging a single interface (eg br0) onto eth0 but none for multiple interfaces (eg br0, br1 etc).
Is this possible?

A:

Maybe you have it backwards. You don't bridge br0 onto eth0, but eth0 onto br0. And yes, you can put any number of devices on a bridge, so you can also put eth1 and eth2 onto br0, using the brctl addif br0 eth1 command. Does that answer your question?

