[libvirt-users] virsh net-start default fails

David Roundy roundyd at physics.oregonstate.edu
Tue Oct 7 18:53:49 UTC 2014

Hi all,

I'm getting an error, and have failed to succeed in googling for help with
it.  I have an old VM that I created a while back (at least one reboot ago,
possibly a kernel upgrade ago), and am now finding that it won't start due
to a lack of the 'default' network.

When I look for how to fix this, everyone seems to agree on the command:

# virsh net-start default
error: failed to get network 'default'
error: An error occurred, but the cause is unknown

But this fails.  A natural next check would be to use net-list:

# virsh net-list --all
Name                 State      Autostart

Which demonstrates that the 'default' network is unknown.  I'm certain that
it used to exist, and the file


does exist, claims to be autogenerated and looks reasonable.  I am at a
loss as to how to debug this further.

Any suggestions?
David Roundy
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