I have this problem, on a different exchange. I used to have good IPV6 connectivity through BT but that started failing a few months ago - same symptoms: issued IPV6 global prefix, but seemingly no packets getting through the BT gateway.
Help appreciated!
Exchange 020 7482 (Kentish Town)
BT-side Gateway FE80::221:5FF:FE01:E481
Issued IPv6 prefix 2A00:23C5:D88:8500::/64
Draytek Vigor 2860 firmware 3.8.4.6_BT (latest)
Hi @penangtom Welcome to the forum and thanks for posting. I've moved your post to create your own thread as the previous thread is solved and the issue is slightly different.
Drop us over your details and we will be happy to see what we can find out for you about this problem. You can contact us by clicking on my user name and selecting contact the mods.
Thanks
John