Yes indeed - most of the pitboss games I'm playing at the moment are hosted by Dynamic DNS.
Maybe confusing myself here, but is there any difference between a Pitboss and a Direct IP game?
We've been playing Direct IP games between myself and 3 friends, where one hosts and the others connect to him. However, if any of us have to leave, we save up and come back another time... this isn't Pitboss as I understand it, where a game is hosted on a 3rd party's computer and everyone comes and goes as they please?
As an aside, I've managed to set up a Dynamic DDNS to my router, and have been able to send packets through the router to the computer behind hit... so fingers crossed when my friends get home I'll be able to test if this has helped.
Cheers again.