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[Mathieu Trudel-Lapierre <mathieu.tl@xxxxxxxxx>]

Turns out this is provably an issue with libnl. Routes are being given
priorities by NetworkManager but the function that does this isn't
seeing all the routes it should when it tries to apply the priorities.

You can "easily" fix this by removing the routes and re-adding them with
a "metric N" value attached. NM usually uses 1 for ethernet and 2 for
wireless (and 3 for mobile, etc.)

E.g.
ip route del <network> dev eth0 scope link proto kernel
ip route add <network> dev eth0 scope link proto kernel metric 1
ip route del <network> dev wlan0 scope link proto kernel
ip route add <network> dev wlan0 scope link proto kernel metric 2

Except these depend on the actual network being set.

I've opened a bug upstream about the issue (linked), and I'm continuing
to work to fix this.

** Changed in: network-manager (Ubuntu)
       Status: Incomplete => In Progress

** Changed in: network-manager (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)

** Bug watch added: GNOME Bug Tracker #659983
   https://bugzilla.gnome.org/show_bug.cgi?id=659983

** Also affects: network-manager via
   https://bugzilla.gnome.org/show_bug.cgi?id=659983
   Importance: Unknown
       Status: Unknown

-- 
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Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/856333

Title:
  (oneiric) wired connection unnaturally slow

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

Bug description:
  After an update today (22 Sept) my wired connection is so slow as to
  be unworkable.  I have a Thinkpad X201s, so this could be a dupe of
  bug #836250, but that bug was reported a month ago and my machine has
  worked fine much more recently than that.  I feel this is something
  that was introduced in an update sometime in the last 2-3 days.

  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 12:46:39 2011
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  IpRoute:
   default via 10.45.43.1 dev eth0  proto static 
   10.45.43.0/24 dev eth0  proto kernel  scope link  src 10.45.43.13 
   10.45.43.0/24 dev wlan0  proto kernel  scope link  src 10.45.43.94 
   169.254.0.0/16 dev eth0  scope link  metric 1000
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: Upgraded to oneiric on 2011-09-07 (14 days ago)

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