From: Christopher Baines <mail@cbaines.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 55335@debbugs.gnu.org
Subject: bug#55335: openssh-service no longer listens on IPv6
Date: Tue, 17 May 2022 22:33:29 +0100 [thread overview]
Message-ID: <877d6jonb4.fsf@cbaines.net> (raw)
In-Reply-To: <87lev4f71w.fsf_-_@gnu.org>
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Ludovic Courtès <ludo@gnu.org> writes:
> Hi,
>
> Christopher Baines <mail@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?
I'm assuming that configuration that looks at the IP addresses will be
affected, e.g. things like:
Match Address 127.0.0.*
PubkeyAuthentication yes
But this is just a guess.
> 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.)
I'm also interested in a quick fix. I'd like to either make the switch
to using AF_INET6 unconditionally, or push the patch I sent for allowing
it to be used through a configuration option.
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next prev parent reply other threads:[~2022-05-17 21:36 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
2022-05-17 21:33 ` Christopher Baines [this message]
2022-05-18 9:30 ` Ludovic Courtès
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