Does anyone have a comprehensive-ish tutorial on how to circumvent this/just have your own router without having to deal with AT&T. My dad has AT&T fiber and I've been wanting to fix this for him but haven't gotten around to doing the research. IIRC there was some reason why it was a good idea not to use the built in bridge mode + second router and the "better" (ugh) solution was to allow the AT&T thing to do the security handshake and then reroute all the traffic by placing an OpenWRT box between the AT&T router and the fiber box. Would love it if someone could point me in the right direction so I don't have to sift through google.