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[Sebastien Bacher <seb128@xxxxxxxxxx>]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue you are reporting is an upstream one and it
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please
tell us the number of the upstream bug (or the link), so we can add a
bugwatch that will inform us about its status. Thanks in advance.

** Changed in: network-manager (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1542523

Title:
  IPv6 temporary addresses accumulate over time

Status in network-manager package in Ubuntu:
  New

Bug description:
  On my office desktop machine I observe that it accumulates temporary
  IPv6 addresses over time, even though all except one are marked as
  deprecated already.

  E.g. right now my IP list looks like this:
  2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
      inet6 2620:101:80fc:224:ad8a:b15b:f83e:99e9/64 scope global temporary dynamic 
         valid_lft 594471sec preferred_lft 75471sec
      inet6 2620:101:80fc:224:7484:af8e:1051:52b9/64 scope global temporary deprecated dynamic 
         valid_lft 508673sec preferred_lft 0sec
      inet6 2620:101:80fc:224:3855:ba9f:c4ab:5784/64 scope global temporary deprecated dynamic 
         valid_lft 422875sec preferred_lft 0sec
      inet6 2620:101:80fc:224:ac16:b27:9fa4:4f5d/64 scope global temporary deprecated dynamic 
         valid_lft 337078sec preferred_lft 0sec
      inet6 2620:101:80fc:224:f0c6:8f9f:74b8:99ca/64 scope global temporary deprecated dynamic 
         valid_lft 251280sec preferred_lft 0sec
      inet6 2620:101:80fc:224:e070:5f9b:9783:bd0d/64 scope global temporary deprecated dynamic 
         valid_lft 165483sec preferred_lft 0sec
      inet6 2620:101:80fc:224:f46a:182b:e2c8:d026/64 scope global temporary deprecated dynamic 
         valid_lft 79685sec preferred_lft 0sec
      inet6 2620:101:80fc:224:baca:3aff:fea3:1b50/64 scope global mngtmpaddr noprefixroute dynamic 
         valid_lft 2591996sec preferred_lft 604796sec
      inet6 fe80::baca:3aff:fea3:1b50/64 scope link 
         valid_lft forever preferred_lft forever

  Once I reboot the interface has only the one IP addressed based on MAC
  address plus one temporary address.

  I verified manually via 'netstat -anp' that no active network
  connections or listening sockets remain on the interfaces which are
  marked as deprecated.

  I think the deprecated addresses should be removed once no socket is
  any longer using the address.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: network-manager 1.0.4-0ubuntu5.2
  ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6
  Uname: Linux 4.2.0-25-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Feb  5 14:33:40 2016
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2016-01-20 (16 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  IpRoute:
   default via 10.252.24.1 dev eno1  proto static  metric 100 
   10.252.24.0/21 dev eno1  proto kernel  scope link  src 10.252.25.160  metric 100 
   10.252.75.120 via 10.252.24.1 dev eno1  proto dhcp  metric 100
  IwConfig:
   eno1      no wireless extensions.
   
   lo        no wireless extensions.
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  RfKill:
   
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                UUID                                  TYPE            TIMESTAMP   TIMESTAMP-REAL                   AUTOCONNECT  AUTOCONNECT-PRIORITY  READONLY  DBUS-PATH                                   ACTIVE  DEVICE  STATE      ACTIVE-PATH                                        
   Wired connection 1  9950bc89-c72d-4964-9a18-e3187649321e  802-3-ethernet  1454711368  Fri 05 Feb 2016 02:29:28 PM PST  yes          0                     no        /org/freedesktop/NetworkManager/Settings/0  yes     eno1    activated  /org/freedesktop/NetworkManager/ActiveConnection/1
  nmcli-dev:
   DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION          CON-UUID                              CON-PATH                                           
   eno1    ethernet  connected  /org/freedesktop/NetworkManager/Devices/0  Wired connection 1  9950bc89-c72d-4964-9a18-e3187649321e  /org/freedesktop/NetworkManager/ActiveConnection/1 
   lo      loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/1  --                  --                                    --
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

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