If you’ve moved an Ubuntu virtual machine or modified it and then suddenly had a problem getting networking to work, you might want to read through this page, because I’ve figured out a workaround to get it working again.
The full error message is this:
eth0: ERROR while getting interface flags: No such device There is already a pid file /var/run/dhclient.eth0.pid with pid 6847440 Internet Systems Consortium DHCP Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ SIOCSIFADDR: No such device eth0: ERROR while getting interface flags: No such device eth0: ERROR while getting interface flags: No such device Bind socket to interface: No such device Failed to bring up eth0.
sudo vi /etc/network/interfaces
After you run this command to restart networking, everything should likely start working again:
sudo /etc/init.d/networking restart
You should be able to run a ping command, or use ifconfig -a and everything will be working.