[CentOS] ethernet bridge setup

I have a USB to ethernet device connected to CentOS 6.5 on my laptop.

I setup ifcfg-eth0 and added BRIDGE=br0 on eth0
did service network restart, all came up.

"seems" to be working.

However when I plug an ethernet  device into the USB port that is wanting
DHCP
it is not getting an address.

Is there something I missed in the setup?
I was expecting the device connected to the USB to be bridged to my
same network and be able to get a DHCP address on the same network.

Thanks,

Jerry