From: Jack Hill <jackhill@jackhill.us>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: Christopher Baines <mail@cbaines.net>, 55335@debbugs.gnu.org
Subject: bug#55335: openssh-service no longer listens on IPv6
Date: Sat, 14 May 2022 15:09:55 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.2.21.2205141505570.11587@marsh.hcoop.net> (raw)
In-Reply-To: <87lev4f71w.fsf_-_@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 556 bytes --]
On Sat, 14 May 2022, Ludovic Courtès wrote:
> Hi,
>
> Thinking about it, what do you think is the risk of using AF_INET6
> unconditionally?
>
> AFAICS it just works. Is there a switch somewhere that might affect
> that behavior?
Yes, I beleive that it's in sysctl:
```
$ sysctl net.ipv6.bindv6only
net.ipv6.bindv6only = 0
```
If enabled, the v6 socket wouldn't work for v4. Disabled is the default on
Guix System. I don't know what would happen if v6 were disabled entirely.
Hopefully that's not something we have to worry about in 2022.
HTH,
Jack
next prev parent reply other threads:[~2022-05-14 19:11 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-09 10:39 bug#55335: openssh-service no longer listens on IPv6 Christopher Baines
2022-05-13 12:21 ` Christopher Baines
2022-05-13 14:23 ` bug#55335: [PATCH] services: Allow shepherd to listen for IPv6 connections to openssh Christopher Baines
2022-05-13 15:23 ` Jack Hill
2022-05-13 15:25 ` Jack Hill
2022-05-14 8:42 ` bug#55335: openssh-service no longer listens on IPv6 Ludovic Courtès
2022-05-14 14:16 ` Ludovic Courtès
2022-05-18 14:06 ` bug#55335: [PATCH Shepherd 0/3] Endpoints for inetd services + IPv6-only endpoints Ludovic Courtès
2022-05-18 14:06 ` bug#55335: [PATCH Shepherd 1/3] service: 'make-inetd-constructor' accepts a list of endpoints Ludovic Courtès
2022-05-18 14:06 ` bug#55335: [PATCH Shepherd 2/3] tests: Update inetd tests to pass " Ludovic Courtès
2022-05-18 14:06 ` bug#55335: [PATCH Shepherd 3/3] Interpret AF_INET6 endpoints as IPv6-only Ludovic Courtès
2022-05-18 14:28 ` bug#55335: openssh-service no longer listens on IPv6 Ludovic Courtès
2022-05-22 20:08 ` Ludovic Courtès
2022-05-22 22:35 ` Jack Hill
2022-05-23 13:30 ` Ludovic Courtès
2022-05-23 15:29 ` Simon Streit
2022-05-14 15:49 ` Ludovic Courtès
2022-05-14 19:09 ` Jack Hill [this message]
2022-05-17 21:33 ` Christopher Baines
2022-05-18 9:30 ` Ludovic Courtès
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