Public bug reported:
Over the past couple of months in vivid, from time to time I have
noticed that my virbr0 interface, which is set up and managed by
libvirt-bin, has been in an "up" state with no IP address configured.
As I don't use VMs on my laptop very frequently, I don't know when the
problem started and I don't know when exactly the problem is being
triggered. But a search through logs shows the following:
Mar 16 16:48:56 virgil systemd[1]: Stopping Network Manager...
[...]
Mar 16 16:48:56 virgil NetworkManager[32588]: <info> (virbr0): device state
change: activated -> deactivating (reason 'removed') [100 110 36]
Mar 16 16:48:56 virgil NetworkManager[32588]: <info> (virbr0): device state
change: deactivating -> unmanaged (reason 'removed') [110 10 36]
Mar 16 16:48:56 virgil NetworkManager[32588]: <info> (virbr0): deactivating
device (reason 'removed') [36]
Mar 16 16:48:56 virgil avahi-daemon[1336]: Withdrawing address record for
192.168.122.1 on virbr0.
[...]
Mar 16 16:48:56 virgil systemd[1]: Starting Network Manager Script Dispatcher
Service...
[...]
Mar 16 16:48:56 virgil systemd[1]: Started Network Manager Script Dispatcher
Service.
[...]
Mar 16 16:48:56 virgil nm-dispatcher: Dispatching action 'down' for virbr0
[...]
Mar 16 16:48:56 virgil systemd[1]: Starting Network Manager...
[...]
Mar 16 16:48:56 virgil NetworkManager[6097]: <info> devices added (path:
/sys/devices/virtual/net/virbr0, iface: virbr0)
Mar 16 16:48:56 virgil NetworkManager[6097]: <info> device added (path:
/sys/devices/virtual/net/virbr0, iface: virbr0): no ifupdown configuration
found.
[...]
Mar 16 16:49:01 virgil systemd[1]: Started Network Manager.
[...]
Mar 16 16:49:02 virgil NetworkManager[6097]: <info> (virbr0): carrier is OFF
Mar 16 16:49:02 virgil NetworkManager[6097]: <info> (virbr0): new Bridge device
(driver: 'bridge' ifindex: 5)
Mar 16 16:49:02 virgil NetworkManager[6097]: <info> (virbr0): exported as
/org/freedesktop/NetworkManager/Devices/4
Mar 16 16:49:02 virgil NetworkManager[6097]: <info> (virbr0): device state
change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Mar 16 16:49:02 virgil NetworkManager[6097]: <warn> (virbr0): device not up
after timeout!
Mar 16 16:49:02 virgil NetworkManager[6097]: <info> (virbr0): preparing device
Mar 16 16:49:02 virgil NetworkManager[6097]: nm_device_get_device_type:
assertion 'NM_IS_DEVICE (self)' failed
The interface 'virbr0' also shows up in nm-applet's display, which was never
the case before. This interface has always been managed by the libvirt-bin
startup scripts (which causes problems of its own, since a 'service libvirt-bin
restart' does not reinitialize the network and a 'service libvirt-bin stop'
does not stop it). The bring-up of virbr0 appears to still be handled by
libvirt-bin, not by NM; but somehow NM has a device configuration for it and is
downing the interface on service stop - and not restoring it on service start.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: network-manager 0.9.10.0-4ubuntu13
ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
Uname: Linux 3.19.0-7-generic x86_64
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 1 15:48:28 2015
InstallationDate: Installed on 2010-09-24 (1650 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
IpRoute:
default via 192.168.15.1 dev wlan2 proto static metric 1024
169.254.0.0/16 dev virbr0 scope link metric 1000
192.168.15.0/24 dev wlan2 proto kernel scope link src 192.168.15.71
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
207.224.24.209 via 192.168.15.1 dev wlan2 proto dhcp metric 10
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WWanEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to vivid on 2014-12-06 (116 days ago)
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2:
Error: Object 'nm' is unknown, try 'nmcli help'.
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug vivid
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https://bugs.launchpad.net/bugs/1439436
Title:
NM in vivid tries to take over my libvirt bridge, deconfigures its
address
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