Public bug reported: Note that I added this as comment on bug #1439109
It is actually more similar to #1432173 which is a duplicate of above I get : $ systemctl status -l ifup-wait-all-auto.service ● ifup-wait-all-auto.service - Wait for all "auto" /etc/network/interfaces to be up for network-online.target Loaded: loaded (/lib/systemd/system/ifup-wait-all-auto.service; static; vendor preset: enabled) Active: active (exited) since Mon 2015-11-16 07:33:22 IST; 27s ago Docs: man:interfaces(5) man:ifup(8) Process: 514 ExecStart=/bin/sh -ec for i in $(ifquery --list --exclude lo --allow auto); do INTERFACES="$INTERFACES$i "; done; [ -n "$INTERFACES" ] || exit 0; while ! ifquery --state $INTERFACES >/dev/null; do sleep 1; done; for i in $INTERFACES; do while [ -e /run/network/ifup-$i.pid ]; do sleep 0.2; done; done (code=exited, status=0/SUCCESS) Main PID: 514 (code=exited, status=0/SUCCESS) CGroup: /system.slice/ifup-wait-all-auto.service Nov 16 07:32:53 xxx systemd[1]: Starting Wait for all "auto" /etc/network/interfaces to be up for network-online.target... Nov 16 07:32:54 xxx sh[514]: Segmentation fault Nov 16 07:33:22 xxx systemd[1]: Started Wait for all "auto" /etc/network/interfaces to be up for network-online.target. $ sudo vi /etc/resolv.conf I tried what looked like solutions offered here: 1. $ sudo update-rc.d networking remove $ sudo update-rc.d networking defaults [I am assuming that r.cd is a misspelling of rc.d] No change 2. Reinstalled ifupdown I believe I used to see two segfaults. Now I see one Ubuntu wily ifupdown 0.7.54ubuntu1 systemd 225-1ubuntu9 $ cat /etc/network/interfaces # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback auto enp7s0 iface enp7s0 inet dhcp ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: ifupdown 0.7.54ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 CurrentDesktop: Unity Date: Tue Nov 17 22:26:04 2015 InstallationDate: Installed on 2012-12-22 (1060 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) SourcePackage: ifupdown UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: ifupdown (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1517135 Title: ifupdown segfaults To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1517135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs