BT Broadband and HE IPV6 tunnels

[moeller]

I lately moved to BT as a broadband provider who also provide IPV6.  I intended to continue with my IPV6 tunnel, but as far as I could find out BT's smarthub 2 blocks IPV6 tunnel traffic.

Does anybody know if that is correct ?

The ISP router of my previous provider which did not supply IPV6 had no issue with tunnel traffic.

Thank you
Markus