The follow up makes valid points. This should happen. The v4 removal was a funny joke for the 1st but this proposal is unironically good
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True, but it's not unheard of. FreeBSD did the same thing in their latest release.
Which makes sense, IPv6 is actually quite backwards compatible with IPv4, but v4 isn't forward compatible in the same way.
Edit: It's in the release notes for FreeBSD, under Networking. Now possible to disable IPv4 while keeping IPv6 enabled, and build a single stack kernel.
Date: Wed, 1 Apr 2026
Just saying.
This will be cool and useful, I currently use tayga as a clat with jool as the plat.
Yeah, I've disabled IPv4 but I still have NAT64 for discord and some mobile apps that don't work without it.
Some of those websites are the sole reason I still have IPv4 enabled. I don't host much on IPv4 nowadays (mostly just XMPP, as 4 (?) of the servers I talk to still don't have IPv6).
Personally I don't like using CLATs but it's still nice to see this feature finally rolling out.
I'm also interested in IPv6 related things and Apalrd's adventures on YouTube has some cool videos on translation mechanisms and stuff. I thought you might be interested.
What I'm interested is the translation mechanisms. I want to design a large IPv6 network with IPv4 compatibility.
For a data center you can theoretically turn off IPv4 with SIIT