Re: loopback interface
sudo gedit /etc/network/interfaces and add:
Proofread, save and close. If you do not have gedit, you can use kwrite, nano, kate, or vim, but not emacs.
iface lo inet loopback
Probably. You will know in a few moments. If this doesn't fix it, please post back.
Is this problem related with the problem mentioned above.
To the searchers: don't let this happen to you, when you see lo or the loopback interface, hands off!
"Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.