So I've stopped mucking around with VPN and just published Apache Guacamole HTML5 VNC/RDP tunnels. No plugins, no clients except a modern web browser and good security with certbot+auto redirect to https+simple auth to keep badguys away from possible exploits in the guacamole login form. Configs can be as simple as the NoAuth plugin, all the way to full integration with eg. AD. I've implemented this at a number of businesses, and it does what almost everyone in the organization wants. It also supports things like printing (to a pdf that comes thru the browser as a download) and file transfer. Super easy to set up and is much more responsive than VNC or RDP thru ssh.
The times when I actually want full IP access to a network from my laptop are so rare that it seemed silly to maintain IPSec.
What need do others have for full-connectivity VPNs? Not site-to-site VPNs of course, but these ad-hoc on the road type ones.
Honest question