bug#71173: ‘static-networking’ service can remain in ‘starting’ state forever

["Ludovic Courtès" <ludo@gnu.org>]

Ludovic Courtès <ludo@gnu.org> skribis:

> The ‘static-networking’ service can remain in ‘starting’ state forever
> when it specifies a nonexistent NIC.
>
> This can be reproduced by running a system such as hydra/bayfront.scm
> (in maintenance.git) in ‘guix system vm’: shepherd will wait for
> ‘networking’ to start forever, preventing the machine from being cleanly
> halted.
>
> I believe this is due to indefinite blocking in ‘network-set-up/linux’:
>
>                  ;; Before going any further, wait for the
>                  ;; device to show up.
>                  (wait-for-link
>                   #$(network-address-device address)
>                   #:blocking? #f)
>
> It should instead wait for a limited amount of time (info "(shepherd)
> Defining Services").

Proposed fix: <https://issues.guix.gnu.org/75100>.

Ludo'.