That depends what you are actually saying. I'm no expert on IPv6.
AAISP DHCP allocates a static IPv6 WAN address to the router, 2001:8b0:xxxx:xxxx:n:n:n:n where the xxxx:xxxx is not passed through and the n:n:n:n is the hex equivalent of the IPv4 static IP address.
We have a different IPv6 /48 block allocated to our account, but by default are only issued with a single /64 from it. We can add further /64s if we wish. At this point I cease to understand what is going on, as my LAN addresses appear to be from the /48, not the /64.
When I first got BQM going on IPv6 I was using the IPv6 address I see for my wifi adapter LOL! As shown in ipconfig/all. That is what thinkbroadband pick up even now. I alter it for BQM to the above static WAN address for the router. Otherwise BQM would fail when I turn the computer off.
Does that make sense?
My broadband basic info/help site - www.robertos.me.uk.
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Connection - AAISP Home::1 80/20. Sync 63679/13080Kbps @ 600m. BQMs - IPv4