Maybe that is actually related to the dhclient problem. I wonder, if you kill that manually before the ifdown (kill -11) does get rid of the long delay?
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1551415 Title: systemctl stop networking hang / timeout Status in ifupdown package in Ubuntu: New Bug description: I noticed today on lxd that the latest xenial image is failing to bring down networking $ cat /etc/cloud/build.info build_name: server serial: 20160227-141431 to reproduce: $ lxd-images import ubuntu --alias xenial xenial --stream=daily $ lxc launch xenial xtest # wait a bit $ lxc exec xtest /bin/bash % systemctl stop networking ... long time passes .... % systemctl status networking ● networking.service - Raise network interfaces Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor preset: enabled) Drop-In: /run/systemd/generator/networking.service.d └─50-insserv.conf-$network.conf Active: failed (Result: timeout) since Mon 2016-02-29 20:28:14 UTC; 5s ago Docs: man:interfaces(5) Process: 1241 ExecStop=/sbin/ifdown -a --read-environment (code=exited, status=0/SUCCESS) Process: 951 ExecStart=/sbin/ifup -a --read-environment (code=exited, status=0/SUCCESS) Process: 948 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] && [ -n "$(ifquery --read-environme Main PID: 951 (code=exited, status=0/SUCCESS) Feb 29 20:26:35 xtest dhclient[992]: DHCPOFFER of 10.0.3.238 from 10.0.3.1 Feb 29 20:26:35 xtest dhclient[992]: DHCPACK of 10.0.3.238 from 10.0.3.1 Feb 29 20:26:35 xtest ifup[951]: DHCPACK of 10.0.3.238 from 10.0.3.1 Feb 29 20:26:35 xtest ifup[951]: bound to 10.0.3.238 -- renewal in 1669 seconds. Feb 29 20:26:35 xtest systemd[1]: Started Raise network interfaces. Feb 29 20:26:44 xtest systemd[1]: Stopping Raise network interfaces... Feb 29 20:28:14 xtest systemd[1]: networking.service: State 'stop-sigterm' timed out. Killing. Feb 29 20:28:14 xtest systemd[1]: Stopped Raise network interfaces. Feb 29 20:28:14 xtest systemd[1]: networking.service: Unit entered failed state. Feb 29 20:28:14 xtest systemd[1]: networking.service: Failed with result 'timeout'. root@xtest:~# ubuntu-bug /lib/systemd/system/networking.service ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ifupdown 0.8.10ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Mon Feb 29 20:28:28 2016 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) SourcePackage: ifupdown UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1551415/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
