[Bug 1723761] Re: unattended-upgrade hangs on shutdown when network is required for updates

[Launchpad Bug Tracker]

This bug was fixed in the package apt - 1.7.0~alpha1

---------------
apt (1.7.0~alpha1) experimental; urgency=medium

  [ Julian Andres Klode ]
  * CMake: Fix builds without zstd
  * apt.conf.autoremove: Catch some new Ubuntu module packages
  * Fix build with new gtest (Closes: #897149)
  * tests: Do not expect requested-by if sudo was invoked by root
  * Run tests on GitLab CI
  * Handle a missed case of timed out ip addresses (LP: #1766542)
  * Lower default timeout from 120s to 30s
  * apt-key: Pass all instead of gpg-agent to gpgconf --kill (LP: #1773992)
  * Fix lock counting in debSystem
  * CI: Export DEBIAN_FRONTEND=noninteractive in all CI environments
  * Ensure that we are online in apt-daily-upgrade.service (LP: #1723761)
  * gitlab-ci: chmod 755 /root

  [ David Kalnischkies ]
  * move special READMEs into doc/ and format as md
  * Add boilerplate plural form to po/apt-all.pot
  * don't try SRV requests based on IP addresses
  * use 127.0.0.1 instead of localhost as default Tor proxy
  * Extend apt build-dep pkg/release to switch dep as needed
  * Support release selector for volatile files as well
  * Start pkg records for deb files with dpkg output
  * Deprectate buggy/incorrect Rls/PkgFile::IsOk methods
  * Support --with-source in show & search commands
  * Support local files as arguments in show command (Closes: 883206)
  * Drop alternative URIs we got a hash-based fail from
  * Handle by-hash URI construction more centrally
  * Don't force the same mirror for by-hash URIs
  * Reword error for timed out read/write on SOCKS proxy (Closes: #898886)
  * Don't show acquire warning for "hidden" components (Closes: #879591)
  * Use a steady clock source for progress reporting
  * Use steady clock source for bandwidth limitation

  [ Guillem Jover ]
  * Remove obsolete RCS keywords
  * Normalize authors through a mailmap file
  * po: Fill Project-Id-Version with correct project id and version
  * po: Fix translated string not matching format string arguments
  * po: Fix Language field to match actual locale
  * po: Remove spurious text in Plural-Forms field
  * po: Add missing Plural-Forms fields

  [ Filipe Brandenburger ]
  * Update .gitignore
  * Increase debug verbosity in `apt-get autoremove`
  * Extend test-apt-get-autoremove to check debug output

  [ annadane ]
  * Add verb 'be' to NEWS entry for 1.5~beta1 (Closes: 892792)

  [ Алексей Шилин ]
  * Russian program translation update (Closes: 898797)

  [ Frans Spiesschaert ]
  * Dutch program translation update (Closes: #900589)
  * Dutch manpage translation update (Closes: #900602)

 -- Julian Andres Klode <jak at debian.org>  Mon, 25 Jun 2018 17:12:30
+0200

** Changed in: apt (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1723761

Title:
  unattended-upgrade hangs on shutdown when network is required for
  updates

Status in apt package in Ubuntu:
  Fix Released
Status in unattended-upgrades package in Ubuntu:
  Fix Released

Bug description:
  Recently an update for flashplugin-installer on xenial was available
  in the ubuntu repositories.

  During the installation of this package a blob is downloaded from
  Adobe servers, which requires network connectivity/internet access.

  Because the network interface(s) have already stopped when this
  package is installed, the server cannot be reached, thus blocking the
  shutdown process until a timeout kills the unattended-upgrades
  process.

  On my machines the shutdown takes about 30 minutes in this case. The
  systemd configuration is standard here, except for a few additional
  services.

  A possible fix could be adding After=network-online.target
  NetworkManager-wait-online.service to After= in the systemd unit file.

  As a workaround I pinned the flashplugin-installer to -1:
  #echo >/etc/apt/preferences.d/forbid_flashplugin "\
  Package: flashplugin-installer
  Pin: release *
  Pin-Priority: -1";

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