[lxc-users] Error on vivid upgrade

[Laurent Ducos]

hello
I have a problem after updating "apt-get upgrade" on ubuntu vivid

invoke-rc.d: initscript lxc-net, action "start" failed.
dpkg: error processing package lxc (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
lxc

systemctl status lxc-net.service say
● lxc-net.service - LXC network bridge setup
Loaded: loaded (/lib/systemd/system/lxc-net.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Thu 2015-08-27 16:29:05 CEST; 2min 50s ago
Process: 6026 ExecStart=/usr/lib/x86_64-linux-gnu/lxc/lxc-net start (code=exited, status=1/FAILURE)
Main PID: 6026 (code=exited, status=1/FAILURE)

Aug 27 16:29:05 simenon.biblibre.com systemd[1]: Starting LXC network bridge setup...
Aug 27 16:29:05 simenon.biblibre.com lxc-net[6026]: lxc-net is already running
Aug 27 16:29:05 simenon.biblibre.com systemd[1]: lxc-net.service: main process exited, code=exited, status=1/FAILURE
Aug 27 16:29:05 simenon.biblibre.com systemd[1]: Failed to start LXC network bridge setup.
Aug 27 16:29:05 simenon.biblibre.com systemd[1]: Unit lxc-net.service entered failed state.
Aug 27 16:29:05 simenon.biblibre.com systemd[1]: lxc-net.service failed.

dpkg says
Errors were encountered while processing:
lxc
E: Sub-process /usr/bin/dpkg returned an error code (1)

same error after dpkg --force-all --configure -a

 
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