From: David Laight <david.laight.linux@gmail.com>
To: Kuniyuki Iwashima <kuniyu@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Neal Cardwell <ncardwell@google.com>,
Willem de Bruijn <willemb@google.com>,
David Ahern <dsahern@kernel.org>,
Ido Schimmel <idosch@nvidia.com>, Simon Horman <horms@kernel.org>,
Kuniyuki Iwashima <kuni1840@gmail.com>,
netdev@vger.kernel.org, Daehyeon Ko <4ncienth@gmail.com>,
Hyunwoo Kim <imv4bel@gmail.com>
Subject: Re: [PATCH v1 net-next 2/2] ipv6: Remove IPV6_ADDRFORM.
Date: Tue, 8 Sep 2026 10:21:19 +0100 [thread overview]
Message-ID: <20260908102119.3733b93e@pumpkin> (raw)
In-Reply-To: <20260904033543.2635540-3-kuniyu@google.com>
On Fri, 4 Sep 2026 03:35:29 +0000
Kuniyuki Iwashima <kuniyu@google.com> wrote:
> Recently, IPV6_ADDRFORM has received many AI-driven bug reports.
> Fixing them properly would needlessly churn the fast paths in TCP
> and UDP.
>
> IPV6_ADDRFORM was initially introduced in RFC 2133 in 1997,
> but only two years later, it was removed from RFC 2553 in 1999.
>
> In 2026, modern applications natively support dual-stack sockets;
> notably, systemd's socket activation does not use IPV6_ADDRFORM.
>
> Also, getsockopt(IPV6_ADDRFORM) can be replaced with SO_DOMAIN.
>
> Let's remove IPV6_ADDRFORM.
How does the ipv6(7) man page get updated to match?
...
> - module_put(THIS_MODULE);
That wasn't good...
David
next prev parent reply other threads:[~2026-09-08 9:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-04 3:35 [PATCH v1 net-next 0/2] net: Disallow buggy TCP transitions and IPV6_ADDRFORM Kuniyuki Iwashima
2026-09-04 3:35 ` [PATCH v1 net-next 1/2] tcp: Do not allow buggy transitions between ehash and lhash2 Kuniyuki Iwashima
2026-09-04 11:32 ` Jakub Sitnicki
2026-09-07 4:19 ` netdev-bot+sashiko
2026-09-04 3:35 ` [PATCH v1 net-next 2/2] ipv6: Remove IPV6_ADDRFORM Kuniyuki Iwashima
2026-09-04 9:10 ` Paolo Abeni
2026-09-07 4:19 ` netdev-bot+sashiko
2026-09-08 9:21 ` David Laight [this message]
2026-09-08 1:00 ` [PATCH v1 net-next 0/2] net: Disallow buggy TCP transitions and IPV6_ADDRFORM patchwork-bot+netdevbpf
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