alt Hacker News> I don't think this is inherently a problem. [...] My router for example has a similar UI to forwarding a port with IPv4 and opening the port for IPv6.
Glad to hear that you don't have a problem with your router, but how does that relate to GPs problems with theirs?
It isn't. But It's also not an answer to GP.
The solution for them is "get a better router" because the problem is not the IPv6 protocol. Opening a port is not harder than creating a NAT forwarding and if your hardware can't do it then it's bad.