Clark Connect & transparent bridging

I finally had a decent computer come free that I could turn towards a proper content filtering home router using Clark Connect.  The software installed pretty easily and I got the content filtering up and running without much difficulty.

However, unlike M0n0wall which I had been using previously, CC does not support bridging out-of-the-box.  I need that so that my cable company's Set-Top Box (STB) can sit behind the firewall and yet still get transparent access to the dedicated DHCP server for STBs.

  
Internet --- DHCP server ------ eth0 ------- eth1 -------- Home network
             (public IP)     |            |
                             |            |
             DHCP (server) ---  *bridge*  -- eth2 -------- TV set-top box
             (Private IP)

First I need to download bridge-utils using these instructions.  That got them on to my computer from where I had to copy to the router:
$ scp bridge-utils-0.9.3-8.i386.rpm root@192.168.7.1:/tmp
and then install using rpm

Next I took a look at these very basic instructions but my attempts to implement a bridge manually did not work.

The rest is work in progress on the bridge and Clark Connect forums.