How to set up l2tp on linux?

Question

ubuntu

Gentlemen, tell me how to set up an l2tp connection in linux?
I read a lot of manuals on the net, but there is some kind of incomprehensible game for me, there is only with the Internet already available .. And how to set up l2tp when there is no Internet at all in Linux .. only the wire that is inserted into the connector and that's it

Answer 1

And what, in NetworkManager (graphical) there is no L2TP item?
Look, there must be.