We're both talking about the same thing. However, you're likely referring to a solution usually referred to as a "road-warrior" vpn where you have a remote random IP connection that logs (dials) into a server. Connections like these can last for long periods of time (I'll see mine last all weekend to the office from home), but they are still considered temporary. SSH tunneling is used sometimes for this, also the OpenVPN application has an elaborate road-warrior solution.
The solution I was referring to was a static "always-on" connection. That can be done between two OpenBSD servers without any installation of additional software, and can re-establish itself upon system reboot. Additionally, it's a very small configuration -
http://www.daemonforums.org/showthread.php?t=462
I'm not sure if it would work with DNS names instead of IP addresses, but if it could, perhaps using DynDNS in conjunction domain names would still allow this type of solution.