Sure. I did a lot of testing around switching from wlan to gprs and back without actually disconnecting the bluetooth connection. Dnsmasq stayed up between calls and would cause failure messages when trying to run the start script again with the interface change. I haven't had the time to add it yet, but I'd like to pass the ext interface in as a script param so that I can reuse for lots of different scenarios (e.g. aliases, queen bee widgets, dbus scripts, etc.).