Bug#939904: Temporary network disruption during upgrade

[Raphaël Halimi]

Le 17/08/2022 à 00:36, Luca Boccassi a écrit :
>> Personally I see this as a regression, since resolved used to be part of
>> systemd and thus readily available without installing additional packages.
> 
> No support was provided before for resolved, it was completely inhert,
> hence it is not a regression. It is a change in behaviour, and thus
> noted in the NEWS file as expected.
> 
>> Yes, but this goal could be achieved by letting resolved in the main
>> systemd package, and splitting only systemd-resolvconf in its own package.
>>
> 
> Having a single-file-package that is confusing and harder to find is
> not something we want to do, unless there are extremely compelling
> reasons for it. Supporting resolvconf is not one.

Could you at least address the temporary break in DNS resolution ? This 
is still a serious bug, which would deserve its own bug with priority 
grave (if not critical). Since systemd-resolved is mainly used on 
servers, it could result in a very bad surprise for sysadmins when 
bookworm is released.

Perhaps it could be fixed by promoting systemd-resolved to a recommends 
(instead of suggests) in systemd, so that it's installed during the 
upgrade ? Or don't stop the service if /etc/resolv.conf is symlinked to 
/run/systemd/resolve/stub-resolv.conf, so that the admin has the time to 
read the NEWS entry (which, again, didn't work on my system, whereas it 
was supposed to be sent in an e-mail by apt-listchanges), and install 
systemd-resolved before rebooting ?

Also, I understand that you don't wish to revert your changes, but is 
there a reason why resolvconf, openresolv and thus systemd-resolved 
could coexist thanks to the alternatives system ? I know it would be 
more work for maintainers of those three packages, but IMHO it would be 
worth the effort.

And, last but not the least, I see that /etc/resolv.conf is now part of 
systemd-resolved files, which means that it would be deleted when the 
systemd-resolved package is removed from the system. I think it would 
also deserve its own bug with some high priority.

Regards,

-- 
Raphaël Halimi