[Bug 1003971] Re: on upgrade lucid -> precise /etc/default/isc-dhcp-server is not migrated

[Stéphane Graber]

tested here

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Title:
  on upgrade lucid -> precise /etc/default/isc-dhcp-server is not
  migrated

Status in “isc-dhcp” package in Ubuntu:
  Confirmed
Status in “isc-dhcp” source package in Precise:
  Fix Committed

Bug description:
  When upgrading from lucid->precise the /etc/dhcp3/dhcpd.conf file is
  correctly migrated to /etc/dhcp/dhcpd.conf, but the settings in
  /etc/default/dhcp3-server are not migrated to /etc/default/isc-dhcp-
  server.  This leads to the service losing its interface specifications
  potentially allowing it to serve addresses on the wrong interfaces.
  Bad.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: isc-dhcp-server 4.1.ESV-R4-0ubuntu5
  ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
  Uname: Linux 3.2.0-24-generic i686
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  Date: Thu May 24 15:29:35 2012
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: isc-dhcp
  UpgradeStatus: Upgraded to precise on 2012-05-24 (0 days ago)
  mtime.conffile..etc.dhcp.dhcpd.conf: 2012-05-24T09:04:21.549574

  ----

  [rational]
  Config file isn't migrated, leading to duplicate configuration files and lost settings.

  [test case]
  1) Install dhcp3-server on Ubuntu 10.04
  2) Edit /etc/default/dhcp3-server and change INTERFACES to point to eth0 (for example)
  3) (ugly trick) manually update /etc/apt/sources.list to point to precise and include precise-proposed
  4) sudo apt-get update
  5) sudo apt-get install dhcp3-server (a full dist-upgrade won't work, but selective upgrade of just dhcp3-server will work)
  6) Ensure that dhcpd is running, that /etc/default/isc-dhcp-server contains the change you did pre-upgrade and that /etc/default/dhcp3-server no longer exists

  [regression potential]
  If the previous configuration was broken, the new one will be broken too, but that's really what you'd expect from an upgrade...

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