Public bug reported:
Issues "systemctl restart networking" never exits. It hangs during a
call to "systemctl reload ssh.service":
● 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-$network.conf
Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited,
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] &&
[ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
Main PID: 1383 (ifup)
Tasks: 7 (limit: 512)
Memory: 1.8M
CPU: 111ms
CGroup: /system.slice/networking.service
├─1383 /sbin/ifup -a --read-environment
├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
├─1480 /bin/sh -c /bin/run-parts --exit-on-error /etc/network/if-up.d
├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
├─1504 /bin/sh /etc/network/if-up.d/openssh-server
├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
└─1527 systemctl reload ssh.service
Then issuing the same command from another terminal causes the first to
exit successfully (the second also exists successfully).
On the official vagrant image, I get this problem independently of
whether the command is issued through and ssh session. I've gotten the
same behavior on the official xenial AMIs.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ifupdown 0.8.10ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Sat May 21 21:35:08 2016
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ifupdown
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ifupdown (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug uec-images xenial
** Attachment added: "systemd journal"
https://bugs.launchpad.net/bugs/1584393/+attachment/4667794/+files/journal
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https://bugs.launchpad.net/bugs/1584393
Title:
systemctl restart networking hangs reloading ssh.service
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