[Bug 964775] Re: Boot is delayed due to missing static network interface

[nadrimajstor]

As I migrated from Lucid to Precise there was quite a bump when I realized that following lines:
auto eth0
auto eth1
would unsuspectingly have quite an impact on boot time if one of cables is currently unplugged.

Users who use mobile phones with auto/static configurations also have
same problem when phone is not attached.

Clint Byrum gave some nice ideas for workarounds in
https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/839595/comments/39

If you ask me as a user I would prefer to have seamless transition and
expect same behavior from "auto".

However, introducing auto-nowait will also be not quite so obvious but
nice/easy-to-use/grasp solution.

Please keep trying to make Ubuntu usable by mere mortals and thank you
for your patience.

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https://bugs.launchpad.net/bugs/964775

Title:
  Boot is delayed due to missing static network interface

Status in “upstart” package in Ubuntu:
  Confirmed

Bug description:
  /etc/init/failsafe.conf gets stuck waiting for the static interfaces
  in /etc/network/interfaces to come up as one of them is a hotplug
  device.

  I have a BeagleBone which shows up as a USB Ethernet gadget and a rule
  in interfaces to set the IP addresses when it's plugged in.  The rule
  is:

  auto usb9
  iface usb9 inet static
          address 192.168.7.1
          netmask 255.255.255.0
          up echo 1 > /proc/sys/net/ipv4/ip_forward
          up iptables -P FORWARD ACCEPT
          up iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.0/24
          down echo 0 > /proc/sys/net/ipv4/ip_forward
          down iptables -t nat -F POSTROUTING

  upstart waits for ths interface to be configured but as the device
  isn't there it never gets configured.  Eventually failsafe kicks in
  but it adds 2 minutes to the boot.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: upstart 1.4-0ubuntu9
  ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
  Uname: Linux 3.2.0-19-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
  Date: Mon Mar 26 09:40:56 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120219)
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm
   LANG=en_NZ.UTF-8
   LANGUAGE=en_NZ:en
  SourcePackage: upstart
  UpgradeStatus: No upgrade log present (probably fresh install)

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