[Bug 1301015] Re: Networking does not restart

[Andy Courcier]

Ubuntu 14.04 Server Not Rebooting (ifupdown network issue)

It appears that with the latest bundle of Ubuntu updates, ifupdown
breaks the server boot quite fantastically.

Resolution 1: Change the order that the updates are applied in

[1] BACKUP SERVER!
[2] apt-get update
[3] apt-mark hold ifupdown
[4] apt-get upgrade -y
[5] apt-mark unhold ifupdown
[6] apt-get upgrade -y
[7] Check that the server reboots correctly

Resolution 2: edit your network interfaces file, specifically looking for incorrect commands:
example: post-up ip6tables-restore < /etc/iptables.up.rules

This is clearly not correct since it is attempting to load IPV4 tables to IPV6 routes and will result in a network failure,
thus preventing booting of the server.

[1] nano /etc/network/interfaces
[2] Remove incorrect post boot commands, ie. post-up ip6tables-restore < /etc/iptables.up.rules
[3] apt-mark unhold ifupdown (If you previously had the package on hold)
[4] apt-get upgrade -y
[5] Check that the server reboots correctly.

I am not sure where this bug came from @ubuntu but it is nasty, nasty,
nasty!

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https://bugs.launchpad.net/bugs/1301015

Title:
  Networking does not restart

Status in ifupdown package in Ubuntu:
  Confirmed

Bug description:
  In Ubuntu Server 14.04 it appears it is not possible to restart
  networking. This is fresh install from ISO.

  wirehive at ubuntu:~$ sudo /etc/init.d/networking restart
  wirehive at ubuntu:~$ echo $?
  1
  wirehive at ubuntu:~$ sudo service networking restart
  stop: Job failed while stopping
  start: Job is already running: networking
  wirehive at ubuntu:~$ sudo bash -x /etc/init.d/networking restart
  + PATH=/sbin:/bin
  + RUN_DIR=/run/network
  + IFSTATE=/run/network/ifstate
  + STATEDIR=/run/network/state
  + '[' -x /sbin/ifup ']'
  + '[' -x /sbin/ifdown ']'
  + . /lib/lsb/init-functions
  +++ run-parts --lsbsysinit --list /lib/lsb/init-functions.d
  ++ for hook in '$(run-parts --lsbsysinit --list /lib/lsb/init-functions.d 2>/dev/null)'
  ++ '[' -r /lib/lsb/init-functions.d/20-left-info-blocks ']'
  ++ . /lib/lsb/init-functions.d/20-left-info-blocks
  ++ for hook in '$(run-parts --lsbsysinit --list /lib/lsb/init-functions.d 2>/dev/null)'
  ++ '[' -r /lib/lsb/init-functions.d/50-ubuntu-logging ']'
  ++ . /lib/lsb/init-functions.d/50-ubuntu-logging
  +++ LOG_DAEMON_MSG=
  ++ FANCYTTY=
  ++ '[' -e /etc/lsb-base-logging.sh ']'
  ++ true
  + CONFIGURE_INTERFACES=yes
  + EXCLUDE_INTERFACES=
  + VERBOSE=no
  + '[' -f /etc/default/networking ']'
  + verbose=
  + '[' no = yes ']'
  + case "$1" in
  + init_is_upstart
  + '[' -x /sbin/initctl ']'
  + /bin/grep -q upstart
  + /sbin/initctl version
  + return 0
  + exit 1
  wirehive at ubuntu:~$ sudo bash -x service networking restart
  ++ basename service
  + VERSION='service ver. 0.91-ubuntu1'
  ++ basename service
  + USAGE='Usage: service < option > | --status-all | [ service_name [ command | --full-restart ] ]'
  + SERVICE=
  + ACTION=
  + SERVICEDIR=/etc/init.d
  + OPTIONS=
  + '[' 2 -eq 0 ']'
  + cd /
  + '[' 2 -gt 0 ']'
  + case "${1}" in
  + '[' -z '' -a 2 -eq 1 -a networking = --status-all ']'
  + '[' 2 -eq 2 -a restart = --full-restart ']'
  + '[' -z '' ']'
  + SERVICE=networking
  + shift
  + '[' 1 -gt 0 ']'
  + case "${1}" in
  + '[' -z networking -a 1 -eq 1 -a restart = --status-all ']'
  + '[' 1 -eq 2 -a '' = --full-restart ']'
  + '[' -z networking ']'
  + '[' -z '' ']'
  + ACTION=restart
  + shift
  + '[' 0 -gt 0 ']'
  + '[' -r /etc/init/networking.conf ']'
  + which initctl
  + grep -q upstart
  + initctl version
  + case "${ACTION}" in
  + stop networking
  stop: Job failed while stopping
  + :
  + exec start networking
  start: Job is already running: networking
  wirehive at ubuntu:~$

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