Consider following bridge setup:brctl addbr mybridgebrctl addif mybridge eth0I see a lot of people failing their setup on configuring the IP on eth0 rather than the mybridge interface, so I was wondering why is it possible at all? Is there some case where IP on the interface would be actually useful? Or is that just nobody bothered to implement some safeguards there? 
Why I'm able to configure IP address on bridged interface?
ip;bridge