Hello, I may be wrong, but this clearly shows that the Unattended Upgrades Shutdown unit starts once the target Network is being brought down :
> Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Stopped target Network is > Online. > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Stopped target Network. > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Started Unattended Upgrades > Shutdown. > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Stopping ifup for ens3... > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Stopping Raise network > interfaces... > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Reloading. > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Reloading. > Feb 15 12:35:52 ZunattendedUpgrade dhclient[2799]: Killed old client process > Feb 15 12:35:52 ZunattendedUpgrade ifdown[2765]: Killed old client process > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Reloading. > Feb 15 12:35:52 ZunattendedUpgrade systemd[1]: Stopped Raise network > interfaces. > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: Internet Systems > Consortium DHCP Client 4.3.3 > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: Internet Systems Consortium > DHCP Client 4.3.3 > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: Copyright 2004-2015 Internet > Systems Consortium. > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: All rights reserved. > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: For info, please visit > https://www.isc.org/software/dhcp/ > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: Copyright 2004-2015 > Internet Systems Consortium. > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: All rights reserved. > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: For info, please visit > https://www.isc.org/software/dhcp/ > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: Listening on > LPF/ens3/52:54:00:69:a4:c4 > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: Listening on > LPF/ens3/52:54:00:69:a4:c4 > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: Sending on > LPF/ens3/52:54:00:69:a4:c4 > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: Sending on Socket/fallback > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: Sending on > LPF/ens3/52:54:00:69:a4:c4 > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: Sending on > Socket/fallback > Feb 15 12:35:53 ZunattendedUpgrade dhclient[2799]: DHCPRELEASE on ens3 to > 192.168.1.1 port 67 (xid=0x3e07e0e5) > Feb 15 12:35:53 ZunattendedUpgrade ifdown[2765]: DHCPRELEASE on ens3 to > 192.168.1.1 port 67 (xid=0x3e07e0e5) > Feb 15 12:35:53 ZunattendedUpgrade systemd[1]: Stopped ifup for ens3. Pinging google for 4 seconds is not sufficient, the Unattended upgrade shutdown can run for saveral minutes before completing. HTH, Kind regards, ...Louis -- Louis Bouchard Software engineer, Cloud & Sustaining eng. Canonical Ltd Ubuntu developer Debian Maintainer GPG : 429D 7A3B DD05 B6F8 AF63 B9C4 8B3D 867C 823E 7A61
