fails to bring up network bridge

[Philip Muškovac]

Probably a dup of #1430675

After upgrading to vivid with systemd my network bridge isn't configured on boot:

$ systemctl --all |grep ifup
● ifup-wait-all-auto.service loaded failed failed Wait for all "auto" /etc/network/interfaces to be up for network-online.target
● <email address hidden> loaded failed failed ifup for eth0
  <email address hidden> loaded active exited ifup for eth1
  <email address hidden> loaded active exited ifup for lxcbr0
  <email address hidden> loaded active exited ifup for virbr0/nic
  <email address hidden> loaded active exited ifup for virbr0
  <email address hidden> loaded active exited ifup for wlan0
  system-ifup.slice loaded active active system-ifup.slice

$ journalctl -u ifup-wait-all-auto.service
-- Logs begin at Sat 2015-03-14 15:17:08 CET, end at Sat 2015-03-14 15:21:30 CET. --
Mar 14 15:17:56 yofel-desktop systemd[1]: Starting Wait for all "auto" /etc/network/interfaces to be up for network-online.target...
Mar 14 15:17:56 yofel-desktop sh[1114]: Segmentation fault
Mar 14 15:19:56 yofel-desktop systemd[1]: ifup-wait-all-auto.service start operation timed out. Terminating.
Mar 14 15:19:56 yofel-desktop systemd[1]: Failed to start Wait for all "auto" /etc/network/interfaces to be up for network-online.target.
Mar 14 15:19:56 yofel-desktop systemd[1]: Unit ifup-wait-all-auto.service entered failed state.
Mar 14 15:19:56 yofel-desktop systemd[1]: ifup-wait-all-auto.service failed.

$ sudo ifconfig br0 up
br0: ERROR while getting interface flags: No such device

$ sudo ifup br0
/etc/resolvconf/update.d/libc: Warning: /etc/resolv.conf is not a symbolic link to /run/resolvconf/resolv.conf
Waiting for DAD... Done

resolv.conf is intentionally a regular file. But after running "ifup" the bridge works fine.

interfaces:
auto lo br0
iface lo inet loopback

iface eth0 inet manual

iface br0 inet static
address 192.168.1.5
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports eth1
bridge_stp off
bridge_maxwait 0
bridge_fd 0

iface br0 inet6 static
address fec0::218:f3ff:fe2c:eb60/64
netmask 64

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-4ubuntu5
ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
Uname: Linux 3.19.0-9-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.16.2-0ubuntu2
Architecture: amd64
Date: Sat Mar 14 15:29:24 2015
InstallationDate: Installed on 2011-01-03 (1530 days ago)
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: System manufacturer System Product Name
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-9-generic root=UUID=9c833d6f-4685-4a19-ad27-fa60a77a4054 ro
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/30/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1238
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5B-Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1238:bd09/30/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5B-Deluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Didier Roche-Tolomelli (didrocks)]

Martin, I'm afraid to not be knowledgeable enough in the network changes you have made. Mind having a look once your are back?

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Martin Pitt (pitti)]

Treating it as a duplicate for now.