root@openstack-controller:~# dpkg -l network-manager
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                          Version             Architecture        Description
+++-=============================-===================-===================-===============================================================
un  network-manager               <none>              <none>              (no description available)
root@openstack-controller:~# systemctl status NetworkManager.service
● NetworkManager.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)
root@openstack-controller:~#