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** Branch linked: lp:~mathieu-tl/ubuntu/oneiric/libnl3/lp856209

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https://bugs.launchpad.net/bugs/856209

Title:
  NM fails to set IPv6 default route when IPv6 details entered manually

Status in “libnl3” package in Ubuntu:
  In Progress
Status in “network-manager” package in Ubuntu:
  In Progress

Bug description:
  I have also reproduced this bug booting from the beta1 live DVD. Steps
  to reproduce:

  1. Connect to a wireless network. Mine just presents a standard connection using IPv4 DHCP only. No DHCPv6 or SLAAC is available.
  2. Disconnect from the wireless network (by choosing Disconnect from the network indicator)
  3. Edit Connections (from the network indicator)
  4. Set the connection that has just been connected to not connect automatically.
  5. Add IPv6 manual settings. Mine are 2001:8b0:XXX::3, prefix 64, gateway 2001:8b0:XXX::1, nameservers 2001:8b0::2020,2001:8b0::2021.
  6. Save and reconnect to the network

  Expected behaviour: default route of 2001:8b0:XXX::1 should be added and I should have both IPv4 and IPv6 connectivity.
  Actual behaviour: IPv6 default route missing but otherwise IPv6 configured. IPv4 connectivity OK.

  Output of ip -6 route show:
  2001:8b0:XXX::/64 dev wlan1  proto kernel  metric 256 
  fe80::/64 dev wlan1  proto kernel  metric 256 

  Workaround: add the IPv6 default route by hand.

  This happens on both my main machine (up-to-date on this morning's
  oneiric) and a spare machine I tested with the beta1 ISO. Details
  above are from the spare machine. I ran ubuntu-bug on my main machine
  so the attachments reflect that.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: network-manager 0.9.0-0ubuntu3
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  ApportVersion: 1.23-0ubuntu1
  Architecture: amd64
  CRDA: Error: [Errno 2] No such file or directory
  Date: Thu Sep 22 09:37:15 2011
  IpRoute:
   default via 217.169.15.241 dev wlan0  proto static 
   169.254.0.0/16 dev wlan0  scope link  metric 1000 
   192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1 
   217.169.15.240/29 dev wlan0  proto kernel  scope link  src 217.169.15.243
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to oneiric on 2011-09-03 (18 days ago)
  WpaSupplicantLog:

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