Hi, I'm still looking for help. In "IPsec" menu, you can add new "Peers" and "Proposal" on Mikrotik L2TP client same as like you made on L2TP server side.. The secret key can enter on "Secret" line on "Peers" tab.. Remember to change "Excahange...
You can make new Peers and Proposal in IPsec menu at Mikrotik, same as like you made on L2TP server side..
The secret key can you enter on "secret" line..