GNU bug report logs - #71462
Default ntp service configuration not working on IPv6 network

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 71462 in the body.
You can then email your comments to 71462 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Guillaume Le Vaillant <glv <at> posteo.net>
To: bug-guix <at> gnu.org
Subject: Default ntp service configuration not working on IPv6 network
Date: Mon, 10 Jun 2024 08:30:32 +0000

[Message part 1 (text/plain, inline)]

On an IPv6-only network, the default configuration for ntp-service-type
doesn't work, because the default pool used (<0.guix.pool.ntp.org>)
doesn't have IPv6 addresses.

In fact, the <1.guix.pool.ntp.org> and <3.guix.pool.ntp.org> pools don't
have IPv6 addresses either. Only the <2.guix.pool.ntp.org> pool works
with IPv6.

Would it be possible to add IPv6 support to pools 0, 1 and 3?

[signature.asc (application/pgp-signature, inline)]

Message #8 received at 71462 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: Guillaume Le Vaillant <glv <at> posteo.net>
Cc: 71462 <at> debbugs.gnu.org
Subject: Re: bug#71462: Default ntp service configuration not working on IPv6
 network
Date: Mon, 17 Jun 2024 19:18:20 -0400

On Mon, Jun 10, 2024 at 08:30:32AM +0000, Guillaume Le Vaillant wrote:
> On an IPv6-only network, the default configuration for ntp-service-type
> doesn't work, because the default pool used (<0.guix.pool.ntp.org>)
> doesn't have IPv6 addresses.
> 
> In fact, the <1.guix.pool.ntp.org> and <3.guix.pool.ntp.org> pools don't
> have IPv6 addresses either. Only the <2.guix.pool.ntp.org> pool works
> with IPv6.
> 
> Would it be possible to add IPv6 support to pools 0, 1 and 3?

It's not something that we, as Guix, can do.

The NTP pool is run by a separate organization, and the question of
which DNS names should return AAAA (IPv6) records is open:

https://community.ntppool.org/t/the-time-has-come-we-must-enable-ipv6-entirely/1968

However, the reason they give us 4 different addresses is so that we can
spread the load around. Our NTP services should choose randomly at
run-time. Or we could just make number 2 the default, and then we'll
have IPv6 support. Or something more complicated...

Message #11 received at 71462 <at> debbugs.gnu.org (full text, mbox):

From: Guillaume Le Vaillant <glv <at> posteo.net>
To: Leo Famulari <leo <at> famulari.name>
Cc: 71462 <at> debbugs.gnu.org
Subject: Re: bug#71462: Default ntp service configuration not working on
 IPv6 network
Date: Tue, 18 Jun 2024 08:21:51 +0000

[Message part 1 (text/plain, inline)]

Leo Famulari <leo <at> famulari.name> skribis:

> On Mon, Jun 10, 2024 at 08:30:32AM +0000, Guillaume Le Vaillant wrote:
>> On an IPv6-only network, the default configuration for ntp-service-type
>> doesn't work, because the default pool used (<0.guix.pool.ntp.org>)
>> doesn't have IPv6 addresses.
>> 
>> In fact, the <1.guix.pool.ntp.org> and <3.guix.pool.ntp.org> pools don't
>> have IPv6 addresses either. Only the <2.guix.pool.ntp.org> pool works
>> with IPv6.
>> 
>> Would it be possible to add IPv6 support to pools 0, 1 and 3?
>
> It's not something that we, as Guix, can do.
>
> The NTP pool is run by a separate organization, and the question of
> which DNS names should return AAAA (IPv6) records is open:
>
> https://community.ntppool.org/t/the-time-has-come-we-must-enable-ipv6-entirely/1968
>
> However, the reason they give us 4 different addresses is so that we can
> spread the load around. Our NTP services should choose randomly at
> run-time. Or we could just make number 2 the default, and then we'll
> have IPv6 support. Or something more complicated...

Thanks for the info. I'm now using pool 2 as the default on my IPv6-only
machines, and it works well.

[signature.asc (application/pgp-signature, inline)]

Message #16 received at 71462-done <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Guillaume Le Vaillant <glv <at> posteo.net>
Cc: 71462-done <at> debbugs.gnu.org, Leo Famulari <leo <at> famulari.name>
Subject: Re: bug#71462: Default ntp service configuration not working on
 IPv6 network
Date: Sat, 19 Oct 2024 21:51:42 +0900

Hi Guillaume,

Guillaume Le Vaillant <glv <at> posteo.net> writes:

> Leo Famulari <leo <at> famulari.name> skribis:
>
>> On Mon, Jun 10, 2024 at 08:30:32AM +0000, Guillaume Le Vaillant wrote:
>>> On an IPv6-only network, the default configuration for ntp-service-type
>>> doesn't work, because the default pool used (<0.guix.pool.ntp.org>)
>>> doesn't have IPv6 addresses.
>>> 
>>> In fact, the <1.guix.pool.ntp.org> and <3.guix.pool.ntp.org> pools don't
>>> have IPv6 addresses either. Only the <2.guix.pool.ntp.org> pool works
>>> with IPv6.
>>> 
>>> Would it be possible to add IPv6 support to pools 0, 1 and 3?
>>
>> It's not something that we, as Guix, can do.
>>
>> The NTP pool is run by a separate organization, and the question of
>> which DNS names should return AAAA (IPv6) records is open:
>>
>> https://community.ntppool.org/t/the-time-has-come-we-must-enable-ipv6-entirely/1968
>>
>> However, the reason they give us 4 different addresses is so that we can
>> spread the load around. Our NTP services should choose randomly at
>> run-time. Or we could just make number 2 the default, and then we'll
>> have IPv6 support. Or something more complicated...
>
> Thanks for the info. I'm now using pool 2 as the default on my IPv6-only
> machines, and it works well.

I've now made pool 2 our default configuration address, in commit
503919fcf0 ("services: ntp: Default to an address that supports IPv6.").

Closing.

-- 
Thanks,
Maxim

Previous Next

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