[PATCH] fw4 - masquerade-prefix - please review

[Jonas Lochmann]

Another three weeks have passed. So I am interested if there is the
chance to get this merged (including after adjusting this according
to some feedback) or not at all. In case of a rejection, I am super
motivated to start my OpenWrt fork - because I depend on this
feature and don't want to patch it in on the devices that need it.

Reminder: This patch is from the January

The feedback could be: I will check/review it during the next two
months. But the current situation is frustrating.

Am Sun, Oct 26, 2025 at 09:03:05AM +0100, schrieb Jonas Lochmann:
> I want to continue this topic. For those who don't remember a short summary:
> 
> - this is for use in combination with mwan3 to keep individual addresses
>   for the internal devices with IPv6
> - this is NOT NPTv6 and NPTv6 would not work; devices know their public
>   IPs and a stateless aproach never knows if a particular reply packet
>   must be rewritten and to which prefix it must be rewritten (the hosts
>   in the internal network have IPs (plural) and could have used any of
>   them to start the outbound connection)
> - the problem is so specific that there is no standard for it;
>   I had a conversation with the IPv6 WG about it [1]
> - NAT with IPv6 seems to be a political issue in standards [2]
> - the "normal" IPv6 NAT is not standardized either (as far as I know)
> 
> [1] https://mailman.ripe.net/archives/list/ipv6-wg@ripe.net/thread/HQRLNKT7O6H7CIO4QVBNNOKWOOLTU5DQ/
> [2] https://mailman.ripe.net/archives/list/ipv6-wg@ripe.net/thread/HQRLNKT7O6H7CIO4QVBNNOKWOOLTU5DQ/#OGDOKF4LR6GHOJK4L3X4V2DLUK2A27BV