[Pkg-utopia-maintainers] Bug#755997: #755997 affects debian-edu-config

[Wolfgang Schweer]

> > The dhclient exit hook script 'hostname' fails to be executed in some
> > cases due to the hardcoded (wrong) path to arping in package
> > network-manager.
> > 
> > network-manager-0.9.10.0/src/devices/nm-device.c:
> > 
> > const char *argv[] = { "/sbin/arping", mode_arg, "-q", "-I",
> > nm_device_get_ip_iface (self), "-c", "1", NULL, NULL };
> 
> jessie currently has:
> 
> $ apt-file search bin/arping
> arping: /usr/sbin/arping
> iputils-arping: /usr/bin/arping

Debian Edu uses the second by default.
 
> You said it "sometimes fails to be executed" - and I wonder which are the 
> circumstances when it succeeds?

Should have been correctly: 'fails to set the hostname using the network 
interface IP address.' Not quite sure, but I guess this will always be 
the case.

As far as I understand the involved steps, the hook script doesn't get 
the IP. The IP should be passed over to the script by Network-Manager 
using /etc/NetworkManager/dispatcher.d/02debian-edu-config which fails, 
most probably due to the wrong arping path in the network-manager code.

I noticed the error after executing: 
'systemctl status NetworkManager.service -l'

> Also, what is the effect on Debian Edu? I wonder whether the severity of 
> #755997 should be upgraded...
 
If a hostname is set via GOsa² for a new system (as replacement for the 
automac-XXX hostname) the new hostname should be set after rebooting the 
new machine. This fails and will confuse the local admin(s).

Wolfgang

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