Just had a quick play with the emulator on the TP Link site, try the settings below.
Hi Licquorice
TP did give me settings to use but of no use i am afraid, i tried your settings and still no IPv6, i have been on email with Draytek for questions on the Vigor 130 modem and now they tell me that the UK version is not IPv6 compatible!!! even though they advertise it on their own site that it is, that may be the issue, i have emailed back and am awaiting reply.
Does anyone know of a pure modem that will work with BT fibre for IPv6????