PPPoE refers to Point-to-Point Protocol over Ethernet is a network protocol for encapsulating PPP frames inside Ethernet frames. It appeared in 1999, in the context of the boom of DSL as the solution for tunneling packets over the DSL connection to the ISP's IP network, and from there to the rest of the Internet.
In Ubuntu 20.04LTS I have found that in setting>network
you just cant setup a new connection of dsl/ppoe type (I don't know why!)
So you can use nmcli(network managerment command line)!
-
Name DSL/PPPoE connection :
nmcli con edit type pppoe con-name "Your DSL name"
-
IPS provided username :
set pppoe.username your_username
-
IPS provided username :
set pppoe.password your_password
-
Just save :
save
done!
Or you just can use nm-connection-editor
and a advance network configuration will popup!