There is a command for setup DSL internt connection in ubuntu/kubuntu. I think it may same in other linux Distro also. You can try it.
In the terminal window type
a wizard will appear go through the wizard in most the cases yes. Some where it ask for whether u will start dsl at system startup, press yes/no as per your choice.
After setting up the connection open terminal window and type under mentioned command to start the connection
and for disconnection type