Network problems in Ubuntu 9.10 Karmic Koala

After upgrading to the new Ubuntu "Karmic Koala", many people had problems with the network, in particular, many were faced with a broken dsl connection in the Network Manager. All because of, as it is not difficult to guess, the new Network Manager, which is part of Ubuntu 9.10. In order to get a working network again, you need to install Network Manager's “daily build” from launchpad.net repositories.

Add a new repository in /etc/apt/sources.list

  ~ $ sudo -i
 ~ # echo "deb http://ppa.launchpad.net/network-manager/trunk/ubuntu karmic main" >> /etc/apt/sources.list 

Now we are updating the necessary packages.

  ~ $ sudo apt-get update
 ~ $ sudo apt-get upgrade 

And that's it, the network works :)

In order to temporarily get a working Internet, add the following lines to / etc / network / interfaces
auto eth0
iface eth0 inet dhcp
and use the pppoeconf console configurator. After updating the file / etc / network / interfaces, do not forget to return to the original form, i.e. it should contain only
auto lo
iface lo inet loopback