From: "Clément Lassieur" <clement@lassieur.org>
To: nee <nee@cock.li>
Cc: guix-devel@gnu.org
Subject: Re: Problems with setting up prosody with IPv6 and certbot
Date: Thu, 07 Dec 2017 01:32:04 +0100 [thread overview]
Message-ID: <87bmjbgyyj.fsf@lassieur.org> (raw)
In-Reply-To: <4fa516d8-1068-0899-8744-f450014f4d2a@cock.li>
nee <nee@cock.li> writes:
> 4. Ipv6 is not enabled by default on GuixSD
All my GuixSD machines have IPv6 addresses, and I never did anything
special.
> Problem:
> With the default configuration `ifconfig`
> and `ip addr` did not show an ipv6 address for my server.
> This resulted in `prosodyctl check` printing:
>
> ________________________________________________________________________
> Checking DNS for host tomato.hidamari.blue...
> tomato.hidamari.blue AAAA record points to unknown address
> 2a03:4000:1d:1cb::
> Host tomato.hidamari.blue does not seem to resolve to this server (IPv6)
> Only some targets for tomato.hidamari.blue appear to resolve to this
> server.
> ________________________________________________________________________
>
> Workaround:
> ip -6 addr add <my ipv6 address here> dev eth0
>
> Proper fix:
> I don't know. Something has to be changed about system/base.scm? I don't
> know what exactly it is.
Could you please display the output of "ip addr"?
I can imagine several reasons why the autoconfiguration of your IPv6
addresses didn't work:
1. your link-local address isn't unique,
2. your router didn't send Router Advertisements,
3. your server behaves like a router because IP forwarding is enabled
(most likely).
See https://tools.ietf.org/html/rfc4862,
https://askubuntu.com/questions/114971/ipv6-auto-configuration-not-working
and
https://serverfault.com/questions/380810/ipv6-stateless-autoconfiguration-not-working-on-centos-6-2.
next prev parent reply other threads:[~2017-12-07 0:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-26 15:26 Problems with setting up prosody with IPv6 and certbot nee
2017-11-26 23:16 ` Leo Famulari
2017-12-04 15:29 ` Clément Lassieur
2017-12-07 0:32 ` Clément Lassieur [this message]
2017-12-07 18:07 ` nee
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