L2TP/IPSec client on GL-MT6000

Hello!
My device: GL-MT6000
Kernel Version: 5.4.238
Have you new instruction, how to install L2TP/IPSec client?
Thanks!

There is no such client available for Plug'n'Play.

It's not really fun, check [OpenWrt Wiki] IPsec Modern IKEv2 Road-Warrior Configuration