[Bug 936870] Re: unattended upgrade failing due to incorrectly detected conffile prompt due to "newconffile" line

[Michael Vogt]

What is confusing is that I see the following in /var/lib/dpkg/status:

Package: dhcpcd
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 196
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Architecture: amd64
Version: 1:3.2.3-5
Replaces: dhcpcd-sv
Provides: dhcp-client
Depends: libc6 (>= 2.7), bsdutils (>= 2.11n), procps
Conflicts: dhcp-client, dhcpcd-sv, ifupdown (<< 0.6.4-4)
Conffiles:
 /etc/dhcpcd.sh b5e7e78f7ae70a5d6e6619d58b477764
 /etc/default/dhcpcd 5985e1dff4832ed1fef727da4809202f
 /etc/default/dhcpcd newconffile
 /etc/dhcpcd.sh newconffile
Description: DHCP client for automatically configuring IPv4 networking
 Simple configuration: supports executions of a script when the
 IP address changes.
Original-Maintainer: Simon Kelley <simon at thekelleys.org.uk>

I.e. the Conffiles contains a md5sum and a "flag"

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https://bugs.launchpad.net/bugs/936870

Title:
  unattended upgrade failing due to incorrectly detected conffile prompt
  due to "newconffile" line

Status in “unattended-upgrades” package in Ubuntu:
  Triaged

Bug description:
  On severa hundredl of our Ubuntu machines, we have unattended upgrades
  active.  Over the weekend, this started reporting on all machines with
  dhcpcd installed that it could not upgrade that package due to a
  conffile prompt.  This looks very similar to #773007  and #336558,
  both of which are marked as fixed.

  On one of the machines, I've run unattended-upgrades --debug, and
  attached the output below.  The MD5 sums seem to match (which is a
  relief - I didn't think I was modifying these files), so I don't know
  why the conffile prompt is being detected.  If I run apt-get safe-
  upgrade on its own, it successfully upgrades the package with no
  prompting.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: unattended-upgrades 0.55ubuntu7
  ProcVersionSignature: Ubuntu 2.6.32-37.81-server 2.6.32.49+drm33.21
  Uname: Linux 2.6.32-37-server x86_64
  Architecture: amd64
  Date: Mon Feb 20 10:06:00 2012
  InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
  PackageArchitecture: all
  ProcEnviron:
   SHELL=/usr/local/bin/bash
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
  SourcePackage: unattended-upgrades

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