Comment 0 for bug 1529079

Can't start virtual machines after upgrade to Xenial.

On Ubuntu Server 16.04:
# virsh start testserver
Cannot set property Before, or unknown property.

On Kubuntu 16.04:
Cannot set property Before, or unknown property.
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 1873, in do_install
    guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 414, in start_install
    noboot)
  File "/usr/share/virt-manager/virtinst/guest.py", line 478, in _create_guest
    dom = self.conn.createLinux(start_xml or final_xml, 0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3585, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: Cannot set property Before, or unknown property.

At this moment there is no libvirt or systemd-related error messages in syslog when this error appear on the screen (or virsh output). Both systems was upgraded from 15.10.