Softether CLI howto for drop in OpenVPN replacement


100% Tier-1 Gogent
Anyone have personal notes or aware of a working how-to out there for Debian and derivatives that covers Softether installation?

Looking for how-to that does pedestrian VPN setup as a replacement to OpenVPN.  Nothing fancy.  Only requirement is all CLI as doing this with servers and no GUI or Windows for the control client they push.