I have a BEFRS41v3 router connected to 4 machines. One of these machines is a Linux box on which I have configured a bridge. I am connected to Comcast for broadband access. I am trying to place the bridge in between the cable modem and the router, so that I can conduct network monitoring. But, it doesn't seem to be working. I know the bridge is working, because I can bring it up and loop the traffic back to another interface on the same box. When I examine the setup for the router, I notice that DHCP is not picking up IP address provided by Comast. My understanding is that a transparent bridge is a layer-2 technology that should be invisible to the router. Therefore, the frames coming off of the bridge should pass seemlessly to the router, and the router should be able to pass frames back to the bridge. I am getting an indication of connectivity on the router (probably at layer-2), because the "Internet" light is blinking. But, DHCP refuses to acquire a lock on the IP address. Any suggestions on what is going on here and how to resolve this problem?