I am he that is working on the dynamic version of jh-xotd. I'm 99% sure I've missed something in making the changes to make it dynamic, and haven't had success testing it against my local cisco router. I also haven't yet figured out how to properly decode the X.25 packets from the tunnel interface to decide where to send them. All it does right now is bind to the XOT port and accept all incoming XOT traffic, shove it in the tunnel interface. Connections the opposite direction will fail when it can't find the outgoing connection for it.? I'll try to dig some more over the weekend as time allows.
My fork of jh-xotd:?
-DK