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[Bug 881660] Re: When an ethernet cable is connected to an otherwise empty switch I can't get internet over wifi

 

If you click "Off" or whatever for the connection, it *is* disconnected.
What may happen though is that it re-connects if it's set to connect
automatically. What you need to be looking at is likely the icon in
Shell or in Unity to tell whether something is connected or not; but in
any case if the connection is disconnected, it's not going to be used
for the default route (and it shouldn't normally get autoconnected after
that, or at least it doesn't with nm-applet).

Regardless, if you have reason to believe there's still an issue, don't
hesitate to reopen by setting this bug report to "New". It would help if
you could make sure you reproduce the issue, then provide the output of
'ip route list'. Note that any other connections may also be on and
taking the default gateway, *all* wired connections will keep priority,
in this case it may be eth0 as much as eth1.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/881660

Title:
  When an ethernet cable is connected to an otherwise empty switch I
  can't get internet over wifi

Status in “network-manager” package in Ubuntu:
  Invalid

Bug description:
  When an ethernet cable is connected to an otherwise empty switch I
  can't get internet over wifi

  I connect my computer to a switch that is not connected to any other device.
  I connect my computer over wifi to my home AP
  I disconnect the wired connection with network manager
  I cannot ping google.com
  I unplug the ethernet cable
  I can ping google.com

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: network-manager 0.9.1.90-0ubuntu4
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  CRDA: Error: [Errno 2] No such file or directory
  Date: Tue Oct 25 21:18:26 2011
  Gconf:
   
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  IpRoute:
   default via 192.168.0.1 dev eth1  proto static 
   169.254.0.0/16 dev eth1  scope link  metric 1000 
   192.168.0.0/24 dev eth1  proto kernel  scope link  src 192.168.0.7  metric 1 
   192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.30  metric 2
  Keyfiles: Error: [Errno 2] No such file or directory
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)

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References