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[Thiago Martins <thiagocmartinsc@xxxxxxxxx>]

This is fixed on Xenial 16.04!  YAY!   :-D

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https://bugs.launchpad.net/bugs/1101825

Title:
  IPv6 static default route added incorrectly by network-manager

Status in NetworkManager:
  Fix Released
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  The relevant part of the IPv6 routing table looks like this:

  fe80::/64 dev wlan0  proto kernel  metric 256
  default via fe80::5054:ff:fe64:aad0 dev wlan0  proto static  metric 1
  default via fe80::5054:ff:fe9c:741e dev wlan0  proto kernel  metric 1024  expires 8sec
  default via fe80::5054:ff:fe64:aad0 dev wlan0  proto kernel  metric 1024  expires 10sec

  I believe the proto static metric 1 route is an error, since it
  persists even when the router stops advertising.  This breaks the IPv6
  architecture for router redundancy.

  I am in control of this network and can alter router advertisement
  parameters if needed.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: network-manager 0.9.6.0-0ubuntu7
  ProcVersionSignature: Ubuntu 3.5.0-22.34-generic 3.5.7.2
  Uname: Linux 3.5.0-22-generic x86_64
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: amd64
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Date: Sat Jan 19 10:47:05 2013
  InstallationDate: Installed on 2012-11-15 (65 days ago)
  InstallationMedia: Ubuntu-Server 12.10 "Quantal Quetzal" - Release amd64 (20121017.2)
  IpRoute:
   default via 192.168.4.1 dev wlan0  proto static
   169.254.0.0/16 dev wlan0  scope link  metric 1000
   192.168.4.0/24 dev wlan0  proto kernel  scope link  src 192.168.4.64  metric 9
  MarkForUpload: True
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog: Jan 19 10:17:54 pippin wpa_supplicant[1009]: wlan0: WPA: Group rekeying completed with 00:24:a5:f1:08:8e [GTK=CCMP]
  mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2012-11-25T12:30:38.408468
  nmcli-dev:
   DEVICE     TYPE              STATE         DBUS-PATH
   wlan0      802-11-wireless   connected     /org/freedesktop/NetworkManager/Devices/1
   eth0       802-3-ethernet    unavailable   /org/freedesktop/NetworkManager/Devices/0
  nmcli-nm:
   RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN
   running         0.9.6.0    connected       enabled       enabled         enabled    enabled         enabled

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