I can confirm that the Draytek 2762 is compatible. (Yes, I know you said new models but the implication is that the 2763 and 2765 would be compatible).
It's changed recently. Having gone over to Digital Voice, I'm now just setting the Draytek as WAN2 and a DHCPv6 client, (of the SH2), in the WAN IPv6 settings. When I was using the Draytek on it's own, prior to DV, it was just the WAN1 IPv6 set as PPP.
I don't know whether you're aware, but the Draytek update site does demo interfaces for various models. The 2865 F/W 4.3.2 looks the same as the 2762. If you are using it as a direct connection to the internet then it is
The menu on the left Wan > Internet access > IPv6 button > PPP
Second thing that comes to mind is, Windows 10 temporary addressing is a pain in the butt. It seems to like using a deprecated address which then screws the tests up. Windows 11 seems to have fixed the problem.
Thanks for that. I already have WAN / Internet connection / IPV6 set as PPP
BT seems to be giving me an ipv6 address:
But tests (https://test-ipv6.com/) show that I am not using it properly?
Not sure of what I'm doing wrong here...