[Bug 847782] Re: installer writes a permanent ethernet entry in interfaces file

[Leo Milano]

Thanks, Robert!

I will update the description, since this is very relevant. Basically,
the installer is always adding "auto ethX"  to the interfaces file,
provided there is an ethernet connection at install time. This means the
problem will be much more widespread than we had thought. I think the
severity of this bug is higher than Medium, but I can't change that.

So, all the installers should address this. And I think the upgrade tool
should address this, as well. Many people who have never used the
command line but had an ethernet connection in their first install, will
have 3 minutes boot delays until/unless they learn how to modify a text
file in sudo mode.

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https://bugs.launchpad.net/bugs/847782

Title:
  installer writes a permanent ethernet entry in interfaces file

Status in “debian-installer” package in Ubuntu:
  New

Bug description:
  If Ubiquity (the installer) is ran while connected to the internet via
  ethernet, writes an "auto ethX" line in /etc/network/interfaces. This
  means that the boot up process, including bringing up the X system by
  upstart, will be delayed for whatever timeout is defined in
  /etc/init/failsafe.conf (see bug 839595). This is currently 120
  seconds.

  So far, it seems like the best solution would be for the installer to
  give the user the option to choose what to do with the interfaces file
  after finishing installation. This will also be an issue with upgrades
  to Oneiric, so the upgrade tool should probably offer the user to
  "fix" the interfaces file. In all cases, the user should be offered a
  sane default behavior.

  Please see bug #839595 for more information

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