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

[Clint Byrum]

I should also point out that bug #838968 was fixed yesterday. That
should help reduce the cases of this problem. It seems that sometimes
the installer removes just the 'iface' line, and not the 'auto' line. We
were incorrectly waiting on interfaces that could never be brought up,
because they had no definition, but did have an auto line.

Damian, did you have just 'auto ppp0' or also 'iface ppp0 ....' ? If you
only had auto ppp0, then you were affected by 838968, and should make
sure you have the latest ifupdown package.

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

Title:
  installer writes a permanent ethernet entry in interfaces file

Status in “netcfg” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Fix Released
Status in “netcfg” source package in Oneiric:
  Won't Fix
Status in “upstart” source package in Oneiric:
  Fix Released

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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