@tommybobbins Thank you for helping me get set up, at least with everything except Vision!
I had infinity installed yesterday. Installation went well except that they were unaware of the possibility of not using the HH3 and had never installed BT vision before!
I have a 4th Generation Time Capsule and a couple of the current Airport Expresses running off it, one bridged, one extending.
When I tried to run the Gigabit output from the HH3 into the WAN on the TC, everything worked fine, except wifi. Next to no, and generally no, internet, but the wired connections worked a treat. The BT Vision box was plugged into the bridged AE and worked with no problems, my Mac (on ethernet) had a blistering connection. The WiFi network seemed still to work, but with no internet bandwith at all.
Removing the HH3, and setting up PPPoE as per the post from tommybobbins in post 12 of this thread, I have everything working perfectly, except the BT Vision box, which now won't stream channels and essentially tells me my broadband is off.
I have been trying to find ways of making the TC 'ape' the HH3 as I have seen described in various places, which if I understand correctly requires the TC to use a specific local IP address of 198.168.1.254 - but I can't seem to achieve this.
I feel like I've been sold a pup. HH3 will not play ball with my existing, higher spec, network setup, which is hardly an obscure one, but removing it loses me a TV service I am paying for! I have seen lots of people saying they have got BT Vision boxes working using only a TC or Airport Extreme and discarding the HH3, but I can't work out what I've missed.
Finally, Airport utility tells me I have an IPv6 Relay Error, when I am connecting without the HH3. Is this something I should ignore whilst BT sort out their infrastructure? Have I got that right?
Many thanks to those who have contributed and those who might be able to help!
