View Full Version : [ubuntu] no more network connection

November 17th, 2008, 08:50 AM
Hello all,
The other day my PC turned off unexpectedly due to a blackout, when everything came back up one of my PC running 8.04 no longer had a network connect.

At first I thought the NIC may have got fried but all the right lights were flashing and ifconfig -a returns the mac address etc. Ive tried roaming, dhcp and static ip addresses with no luck.

In my haste I followed a forum post blindly which recommended apt-get remove network-manager net-tools. I have recovered some of the removed items but not all.

If I do dhclient eth0 I get No DHCPOFFERS received

Is there a way to reset all the network settings like after a fresh install.

Any help would be greatly appreciated.
D :confused:

November 17th, 2008, 08:56 AM
Just a wild shot here: It sounds that your router is no longer giving the offer to the same i/p address as your machine had before the power failure. As i understand it, the NODHCPOFFERS is because the server or router won't allocate an i/p address to your system cos it already has an i/p address - just not the same one as before.
you could try
ifdown eth0
ifup eth0
to restart your network.

Bucky Ball
November 17th, 2008, 08:59 AM
Try this in a terminal:

sudo /etc/init.d/networking restart

That should look for any dhcp servers if they are about.