GNU bug report logs - #55335
openssh-service no longer listens on IPv6

Previous Next

Full log

Message #28 received at 55335 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Christopher Baines <mail <at> cbaines.net>
Cc: 55335 <at> debbugs.gnu.org
Subject: Re: bug#55335: openssh-service no longer listens on IPv6
Date: Sat, 14 May 2022 17:49:31 +0200

Hi,

Christopher Baines <mail <at> cbaines.net> skribis:

> Switching to listing via IPv6 should support IPv4 connections, as Linux is
> capable of translating IPv4 connections to IPv6. I think there's a risk that
> switching to this approach will affect some uses of the openssh
> service. Therefore, this commit makes this a configuration option, which is #f
> by default.

[...]

> +                       (make-socket-address #$(if (openssh-listen-via-ipv6? config)
> +                                                  #~AF_INET6
> +                                                  #~AF_INET)
> +                                            INADDR_ANY
>                                              #$port-number)

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?

(I still think that changing ‘make-inetd-constructor’ to accept multiple
addresses is a better fix longer-term, but if we can have this quick
fix, that’s great.)

Ludo’.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.