Curious - did you buy the 6120 or did OOL provide it? I read one review on Amazon where Bresnan would not authorize a 6120 to be used because it wasn't 'compatible' with DOCSIS 2.0, this while I was happily using mine on their DOCSIS 1.1 network
I bought it and called them to give them the MAC address... the guy kept asking for a second MAC, which I thought was a bit odd, but eventually he made it work with just what I gave him.