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[Bug 1101825] Re: IPv6 static default route added incorrectly by network-manager


I too am seeing this bug but with a slightly different use-case. If a
user swaps out their default router, no IPv6 traffic will pass because
of the static route installed. I have to disconnect the interface in
Ubuntu and then reconnect to clear the static. At that point, the new
default-route learnt via RA's takes over.

It would be really great to get this one fixed. As IPv6 deployment
starts to ramp up it is going to affect more and more people.

Thanks, Nick

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  IPv6 static default route added incorrectly by network-manager

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

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
  ProcVersionSignature: Ubuntu 3.5.0-22.34-generic
  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)
   default via dev wlan0  proto static dev wlan0  scope link  metric 1000 dev wlan0  proto kernel  scope link  src  metric 9
  MarkForUpload: True
   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
   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
   running    connected       enabled       enabled         enabled    enabled         enabled

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