Hi Todd
Sorry for me delayed answer. I'm happy you could find a way to work around

Be sure that the IP check has a good security reason ... like this it is ensured that jOpenSim will not give out any information to a destination, it does not belong to
Usually, the best solution in most cases would be to change the value for ExternalHostName in your /bin/Regions/Regions.ini
Greetz
FoTo50