** Summary changed:

- No network connectivity after upgrade from 16.04 to 16.10
+ No network connectivity (NIC unmanaged) after upgrade

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Touch seeded packages, which is subscribed to network-manager in Ubuntu.

  No network connectivity (NIC unmanaged) after upgrade

Status in network-manager package in Ubuntu:
  Fix Released
Status in network-manager source package in Yakkety:
  Fix Released
Status in network-manager source package in Zesty:
  Fix Released

Bug description:
  When upgrading from Xenial (with all updates installed) to Yakkety/Zesty you 
will boot to a system without networking - sad!

  Test Case
  1) Boot a xenial desktop system
  2) Ensure network-manager version 1.2.6-0ubuntu0.16.04.1 from -updates is 
  3) Upgrade to yakkety or zesty
  3.5) Enable -proposed and download the new version of n-m "apt-get download 
  4) Reboot
  5) Observe you have no network

  If you install the version of network-manager from yakkety-proposed
  and then reboot you should have a network connection.

  1) Boot a xenial desktop system.
  2) ensure network-manager version 1.2.6-0ubuntu0.16.04.1 from -updates is 
  3) Install nplan, configure to set up static network on an ethernet device 
using nplan.
  4) Upgrade to yakkety or zesty
  5) Reboot
  6) Observe that your system is still being managed by networkd rather than 

  Regression Potential

  Any failure to manage ethernet or wireless devices after upgrade, or
  issues with the use of netplan in conjunction with NetworkManager
  should be investigated as potential regressions. For example, if after
  upgrading, ethernet devices are no longer managed, or if devices that
  should be explicitly ignored by NetworkManager due to existing user
  configuration are now managed, these would indicate a possible
  regression caused by this update.

  Original Description

  nplan was installed during the upgrade process but I had no network
  connectivity after upgrading. Apparently, no package wanted to manage
  my ethernet connection.

  ProblemType: BugDistroRelease: Ubuntu 16.10
  Package: ubuntu-release-upgrader-core 1:16.10.10
  ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
  Uname: Linux 4.8.0-41-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Mon Mar 27 11:34:04 2017
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-01-16 (1531 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130116)
  PackageArchitecture: allSourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to yakkety on 2017-03-17 (10 days ago)

  modified.conffile..etc.update-manager.meta-release: [modified]
  mtime.conffile..etc.update-manager.meta-release: 2013-10-08T06:39:09.818913

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