Linux?
Not an option. Also the ISP does not provide an IPv6 connectivity. Even Teredo does not work with default settings (guess that ISP intentionally blocked Teredo traffic), only with alternative server and relay.
Do you still get IPv4 address from your ISP by default? I had to call them in order to make sure I get one without that Id be getting IPv6 addresses only.
Yes, and IPv4 is fine. It does detect (via UPnP I guess) the IPv4 address change after router reboot etc. and advertises correct one. I see the issue only with Teredo IPv6 addresses. Not much of bothering though, just curious.
It would be great if someone will check this for the regular dynamic IPv6 addresses.