Linux-3.0.0-13 upgrade breaks networking + simple temporary fix

[David Favor]

Upgrading Ubuntu-11.10 from kernel-3.0.0-12 to kernel-3.0.0-13 breaks networking, rendering machines unbootable.

Problem is missing /run/network directory reported when '/etc/init.d/networking restart' is run manually.

Multiple problems...

1) /etc/init/networking.conf creates /var/run/network instead of /run/network

2) /run/network never populated

Fix seems to be changing /etc/init/networking.conf as follows:

1) change mkdir -p /var/run/network to /run/network

2) exec /etc/network/if-up.d/upstart to populate /run/network

/etc/network/if-up.d/upstart is what's called in /etc/init.d/networking to populate /run/network,
so that's what's used in this fix. There may be a more correct way to do this.

This doesn't work though, as it appears tmpfs gets mounted over /run/network after networking.conf runs.

For now, adding the following big, ugly, simple hack to /etc/rc.local

mkdir -p /run/network && /etc/init.d/networking restart

[David Favor (davidfavor)]

To clarify... Machine booted fine @ Kernel 3.0.0-12 and upgrade only installed Kernel 3.0.0-13 packages.

This is odd as the problem occurs in the netbase package and no netbase or upstart package updates occurred.

My guess is something has changed in the way tmpfs mounting occurs... maybe...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Preston Wiley (preston-u)]

I had this problem when upgrading from 11.04 to 11.10. The temporary fix to the rc.local file works around the problem, but it is added around 2 minutes to the boot time of the system.

[Stéphane Graber (stgraber)]

I'm sorry but I can't find anything wrong in our scripts... /var/run is a symlink to /run so whatever we end up using as mkdir target will work.

As for the two minutes comment, that's because since 11.10, we wait for all entries in /etc/network/interfaces to be configured, please check /etc/network/interfaces for any invalid configuration.

Also ensure that /run exists and is mounted as tmpfs (by initrd) and that /var/run is a symlink pointing to /run. If that's not the case, then this bug should be moved to the initscripts package instead.

[Launchpad Janitor (janitor)]

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