Dynamic IPv6 firewall configuration
I have an ISP provided Archer C5. I have access to the IPv6 firewall page and I'm able to let traffic through for a single global IPv6 address which is my home server. But the prefix is dynamic so I'm having to rush to change each record every time the power goes out or something. And if I'm outside the house I won't even be able to do that.
Confusingly, the configuration page asks for an "Internal IP" whereas the help button say "Global IP". I tried using fe80::<suffix> but that doesn't open the ports. Is there anyway I can do this without having to enter the changed global IP each time?