Restarting the network

[NoOp]

On 03/03/2010 11:58 AM, R Kimber wrote:
> NetworkManager: <info> (eth0): device state
> change: 7 -> 9 (reason 5)

Maybe:
<http://www.google.com/search?complete=0&hl=en&source=hp&q=ubuntu+%2B"NetworkManager%3A+<info>+(eth0)%3A+device+state%0D%0Achange%3A+7+->+9+(reason+5)"&btnG=Google+Search>
and
<http://www.google.com/search?hl=en&complete=0&q=ubuntu+%2B"NetworkManager%3A+<info>+Marking+connection+'Auto++eth0'+invalid"&btnG=Search>
might lead to some answers.

Perhaps:
<https://bugs.launchpad.net/ubuntu/karmic/+source/network-manager/+bug/435073>
[NetworkManager 0.8 sets IPv6 method to automatic after upgrade for some
users (Was: not get IPv4 address for wired Auto connections because IPv6
fails)]
<https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/466886>
["No network connection" when IPv6 is enabled in Network Manager]
<http://ubuntuforums.org/showthread.php?t=1246092>
[eth0 failed to auto reconnect - DHCP transaction too long?]
<http://kubuntuforums.net/forums/index.php?action=printpage;topic=3104786.0>
[no software solution, but interesting places/commands to check -
including your router]

You might want to give wicd a try. Also consider converting to a fixed
IP given that it's a wired connection. I have had issues w/Network
Manger + DHCP on wired in the past. Not sure if it was the router or NM,
but assigning a fixed IP resolved the issues on my wired test machines.