Markus Peter

But I'm not sure if that's even possible, it depends on the dhcpcv6 daemon telling someone which prefixess it was assigned.

Not quite the same, the one is about dynamic firewall rules, the other about dynamic NPTv6 rules

It likely needs much the same infrastructure in the backend.

The prefix for the WAN interface is different from the prefix we need. Also, this prefix is not going to be set on any interface. It's not that simple.

Ok, so I have a hypothetical LAN interface with Track Interface WAN and offset 4. Now I want NPTv6 to translate the source prefix to the prefix this hypothetical interface...

Why can I not stop dhcp6c giving out GUAs? I can configure the interface with static IPv6 ULA. Giving out GUAs makes the whole feature redundant.

Now I'm confused, as far as I can see in your example, you have no GUA prefix on LAN, but only an ULA prefix, yet you write in you conclusion...

> > > @bimbar - dhcp6c puts the GUA address on the interface, so you can get the prefix from the GUA address. The trick I think, if I understand...

> > > What about ISPs that don't give a GUA on the WAN? What if you want multiple LANs etc? The fact is yes you can get the prefix...

I'd propose merging some implementation of something soon, rather than wait for something perfect which may never come. All with the understanding it may change completely as soon as its...