How to establish pppoe connection in Ubuntu?

Solution 1:

Operating systems doesn't care what operating system the router uses. The standards are open and vendor-neutral. In general the relevant standards are:

• Ethernet for providing physical connectivity. The NIC in your computer has to be supported by the OS you're using, but every Ethernet card can talk to all other Ethernet devices, generally speaking.
• IPv4, the most-common protocol today on the internet. This is well supported by Linux, and most other modern operating systems.
• IPv6, the next generation Internet Protocol, with increased address space to accommodate more devices on the Internet.

When it comes to configuration, the software used by Mikrotik, winbox, is only supported on Windows. It is purported to be well supported in Wine. I also believe mikrotik devices have a command line interface which can be used.

Solution 2:

It's possible to bypass this problem using nmcli command.
Create connection:

nmcli con edit type pppoe con-name "Connection name"

Set a username:

set pppoe.username <username>

Set a password:

set pppoe.password <password>

Save and quit:

save
quit

And this connection going to appear in the Network Manager.