Change IPV6 prefix only?

[xoxfaby]

Suggestion:

I'm pretty sure the Fritzbox supports also sending the ipv6 prefix. I'm not sure if I will need this yet (no idea if my prefix will change or not), but it would be a cool option to dynamically adjust ipv6 addresses to the new prefix if it does change? that way one could have entries for multiple devices that get adjusted correctly.