package:openvswitch-testcontroller:2.5.5-0ubuntu0.16.04.1
Setting up openvswitch-testcontroller (2.5.5-0ubuntu0.16.04.1) ...
Job for openvswitch-testcontroller.service failed because the control process exited with error code. See "systemctl status openvswitch-testcontroller.service" and "journalctl -xe" for details.
invoke-rc.d: initscript openvswitch-testcontroller, action "start" failed.
● openvswitch-testcontroller.service - LSB: Simple OpenFlow controller for testing
   Loaded: loaded (/etc/init.d/openvswitch-testcontroller; bad; vendor preset: enabled)
   Active: failed (Result: exit-code) since Thu 2018-11-08 23:38:08 PST; 5ms ago
     Docs: man:systemd-sysv-generator(8)
  Process: 12334 ExecStart=/etc/init.d/openvswitch-testcontroller start (code=exited, status=1/FAILURE)

Nov 08 23:38:08 ubuntu systemd[1]: Starting LSB: Simple OpenFlow controller.....
Nov 08 23:38:08 ubuntu openvswitch-testcontroller[12334]:  * Starting ovs-tes...
Nov 08 23:38:08 ubuntu openvswitch-testcontroller[12334]: 2018-11-09T07:38:08...
Nov 08 23:38:08 ubuntu openvswitch-testcontroller[12334]: 2018-11-09T07:38:08...
Nov 08 23:38:08 ubuntu openvswitch-testcontroller[12334]: ovs-testcontroller:...
Nov 08 23:38:08 ubuntu openvswitch-testcontroller[12334]:    ...fail!
Nov 08 23:38:08 ubuntu systemd[1]: openvswitch-testcontroller.service: Cont...=1
Nov 08 23:38:08 ubuntu systemd[1]: Failed to start LSB: Simple OpenFlow con...g.
Nov 08 23:38:08 ubuntu systemd[1]: openvswitch-testcontroller.service: Unit...e.
Nov 08 23:38:08 ubuntu systemd[1]: openvswitch-testcontroller.service: Fail...'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package openvswitch-testcontroller (--configure):
 subprocess installed post-installation script returned error exit status 1