Comment 4 for bug 1594902

May be the problem is "apparmor". I noticed the following lines in /var/log/syslog:

Aug 8 14:37:34 blanksjoe systemd[1]: Starting Virtualization daemon...
Aug 8 14:37:34 blanksjoe libvirtd[15585]: libvirt version: 1.3.1, package: 1ubuntu10.1 (dann frazier <email address hidden> Fri, 03 Jun 2016 14:41:21 -0600)
Aug 8 14:37:34 blanksjoe libvirtd[15585]: hostname: blanksjoe.simula.nornet
Aug 8 14:37:34 blanksjoe libvirtd[15585]: Unable to initialize audit layer: Permission denied
Aug 8 14:37:34 blanksjoe kernel: [ 2198.315498] audit: type=1400 audit(1470659854.970:167): apparmor="DENIED" operation="create" profile="/usr/sbin/libvirtd" pid=15585 comm="libvirtd" family="netlink" sock_type="raw" protocol=9 requested_mask="create" denied_mask="create"
Aug 8 14:37:35 blanksjoe libvirtd[15585]: cannot connect to netlink socket with protocol 0: Permission denied
Aug 8 14:37:35 blanksjoe kernel: [ 2198.357952] audit: type=1400 audit(1470659855.014:168): apparmor="DENIED" operation="create" profile="/usr/sbin/libvirtd" pid=15585 comm="libvirtd" family="netlink" sock_type="raw" protocol=0 requested_mask="create" denied_mask="create"
Aug 8 14:37:35 blanksjoe systemd[1]: libvirt-bin.service: Main process exited, code=exited, status=6/NOTCONFIGURED
Aug 8 14:37:35 blanksjoe systemd[1]: Failed to start Virtualization daemon.
Aug 8 14:37:35 blanksjoe systemd[1]: libvirt-bin.service: Unit entered failed state.
Aug 8 14:37:35 blanksjoe systemd[1]: libvirt-bin.service: Failed with result 'exit-code'.
Aug 8 14:37:35 blanksjoe systemd[1]: libvirt-bin.service: Service hold-off time over, scheduling restart.
Aug 8 14:37:35 blanksjoe systemd[1]: Stopped Virtualization daemon.
Aug 8 14:37:35 blanksjoe systemd[1]: libvirt-bin.service: Start request repeated too quickly.
Aug 8 14:37:35 blanksjoe systemd[1]: Failed to start Virtualization daemon.