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::: spoiler transcript From: Linus Torvalds torvalds@linux-foundation.org To: linux-kernel@vger.kernel.org Subject: [RFC] Remove IPv4 support from kernel, effective next merge window Date: Sat, 15 Aug 2025 10:42:00 -0700 Message-ID: 20250815-drop-ipv4@linux-foundation.org

Hey folks,

After yet another deeply technical and entirely calm discussion about HRT (High-Resolution Timers) that somehow devolved into 200+ replies, personal insults, and at least one GIF of a raccoon, I have decided it’s time to take drastic measures.

Effective next merge window, we will be removing IPv4 support from the kernel. This will both (a) resolve the maintainers’ scheduling disputes, and (b) force the world into the IPV6 utopia we were promised back in 1998.

If you need IPv4 after this point, you can either:

run an ancient kernel from before the change (good luck with the bugs), or rewrite your applications to use IPv6 and learn to love colons in your addresses. Yes, I realize this will break roughly *everything *. No, I don’t care. I have already switched all my machines to IPv6-only, except for the toaster, which unfortunately still insists on using a 192. 168. x. x address. The toaster will be replaced.

If you disagree with this decision, I suggest you take it up with the HRT maintainers. But please keep it civil this time. (Or at least keep the raccoon GIFs under 1MB.)

• Linus :::

Ahh… so the Unix socks people. Glad we could clear up that ambiguity.

That’s why IPv6 has privacy extensions which periodically rotate your address

The tempo of working on a SOAP is unreal.

Oh, nice! I had no idea that she was in it. I’ll check it out eventually. Thanks!

@julian yeah, we don't currently support a "silence" because no one really knows what that means so we're pushing towards more granular filters

@julian The easiest is to use "post via e-mail feature" in self-hosted WordPress. But who knows if it then becomes a draft... I have just the idea and I'm sharing it as such, because I fear it could cause a mess of spam.
The basic idea is, "reply via e-mail to this post", and all replies go to Fediverse as blog comments. In that case, "post by email" won't work

@solarbranka yes, great idea!

@evan @hamishcampbell @_elena

Since they have $100M in the bank, 3 is probably a way off. AFACT, they are currently doing both 1 and 2 in parallel; if you look at their protocol engineers, I do believe they are really all in on 1, but much of the rest of the company is taking every opportunity to act in a decentralized manner and going in the opposite direction.

@ricci @hamishcampbell @_elena well, they had $100M when they raised money last year.

Crypto funds love to rollover crypto assets. So maybe some of it was in crypto, like Bitcoin, which has since dropped 25% against USD.

And they've been operating a tech startup with 20-30 staff and dozens of contractors, plus hosting costs which are somewhere in the $20-50M/year range, I'd bet.

If I had to guess on runway for BlueSky today, I'd say 12-24 months.

I really hope he’s alright. Bob’s Burgers is one of those rare things we still have that’s truly great in a world that seems to be falling apart.

Because Lemmy often needs things drawn in crayon.

@julian@activitypub.space When I asked @reiver@mastodon.social last time, he said he’d make sure FediCon 2026 doesn’t overlap with COSCUP 2026, but I’m not sure how it’ll turn out.