feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8381] caught SIGTERM, shutting down normally.
feb 13 10:39:44 regan systemd[1]: Stopping Network Manager...
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8424] device (virbr0-nic): released from master device virbr0
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8429] device (virbr1-nic): released from master device virbr1
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8433] device (vnet0): released from master device virbr0
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8438] device (wlan0): state change: activated -> deactivating (reason 'unmanaged', sys-iface-state: 'managed')
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8441] manager: NetworkManager state is now DISCONNECTING
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8479] device (wlan0): state change: deactivating -> unmanaged (reason 'removed', sys-iface-state: 'managed')
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8641] dhcp4 (wlan0): canceled DHCP transaction, DHCP client pid 11577
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8641] dhcp4 (wlan0): state changed bound -> done
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.8911] manager: NetworkManager state is now DISCONNECTED
feb 13 10:39:44 regan NetworkManager[23490]: <info>  [1550050784.9195] exiting (success)
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Succeeded.
feb 13 10:39:45 regan systemd[1]: Stopped Network Manager.
feb 13 10:39:45 regan systemd[1]: Starting Network Manager...
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.0720] NetworkManager (version 1.15.2) is starting... (after a restart)
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.0723] Read config: /etc/NetworkManager/NetworkManager.conf (lib: 10-dns-resolved.conf, no-mac-addr-change.conf) (run: 10-globally-managed-devices.conf) (etc: 10-ubuntu-fan.conf, default-wifi-powersave-on.conf)
feb 13 10:39:45 regan NetworkManager[2315]: <warn>  [1550050785.0723] config: unknown key 'wifi.cloned-mac-address' in section [device-mac-addr-change-wifi] of file '/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf'
feb 13 10:39:45 regan NetworkManager[2315]: <warn>  [1550050785.0724] config: unknown key 'ethernet.cloned-mac-address' in section [device-mac-addr-change-wifi] of file '/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf'
feb 13 10:39:45 regan systemd[1]: Started Network Manager.
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.0846] bus-manager: acquired D-Bus service "org.freedesktop.NetworkManager"
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.0851] manager[0x55884b4c2020]: monitoring kernel firmware directory '/lib/firmware'.
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.0852] monitoring ifupdown state file '/run/network/ifstate'.
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3220] hostname: hostname: using hostnamed
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3220] hostname: hostname changed from (none) to "regan"
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3224] dns-mgr[0x55884b4b4150]: init: dns=none,systemd-resolved rc-manager=unmanaged
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3242] rfkill2: found Wi-Fi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/ieee80211/phy0/rfkill2) (driver iwlwifi)
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3244] rfkill0: found Wi-Fi radio killswitch (at /sys/devices/platform/dell-laptop/rfkill/rfkill0) (platform driver dell-laptop)
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3554] manager[0x55884b4c2020]: rfkill: Wi-Fi hardware radio set enabled
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3555] manager[0x55884b4c2020]: rfkill: WWAN hardware radio set enabled
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3600] ifupdown:       interface-parser: parsing file /etc/network/interfaces
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3603] ifupdown:       interface-parser: finished parsing file /etc/network/interfaces
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3606] ifupdown: guessed connection type (enx00249b065a13) = 802-3-ethernet
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3607] ifupdown: update_connection_setting_from_if_block: name:enx00249b065a13, type:802-3-ethernet, id:Ifupdown (enx00249b065a13), uuid: b34aa9ad-747d-6a82-78c2-e6e0094cb81b
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3610] ifupdown: addresses count: 1
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3610] ifupdown: No dns-nameserver configured in /etc/network/interfaces
feb 13 10:39:45 regan NetworkManager[2315]: **
feb 13 10:39:45 regan NetworkManager[2315]: NetworkManager:ERROR:src/settings/nm-settings-plugin.c:147:_nm_settings_plugin_emit_signal_connection_added: assertion failed: ((((__extension__ ({ GTypeInstance *__inst = (GTypeInstance*) ((sett_conn)); GType __t = ((nm_settings_connection_get_type ())); gboolean __r; if (!__inst) __r = (0); else if (__inst->g_class && __inst->g_class->g_type == __t) __r = (!(0)); else __r = g_type_check_instance_is_a (__inst, __t); __r; })))))
feb 13 10:39:45 regan NetworkManager[2315]: <info>  [1550050785.3612] ifupdown: management mode: managed
feb 13 10:39:45 regan NetworkManager[2315]: invalid uninstantiatable type '(null)' in cast to 'NMSettingsConnection'
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Main process exited, code=dumped, status=6/ABRT
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Failed with result 'core-dump'.
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Service RestartSec=100ms expired, scheduling restart.
feb 13 10:39:45 regan systemd[1]: NetworkManager.service: Scheduled restart job, restart counter is at 1.
feb 13 10:39:45 regan systemd[1]: Stopped Network Manager.
feb 13 10:39:45 regan systemd[1]: Starting Network Manager...