[Xastir] Intermittent internet connection

[Stuart L. Morris]

Here's a challenge for the new year...

I'd like to use Xastir running on Linux to igate RF to Internet for a 
mobile application where there are no fixed digis. Because it will be 
mobile we will be using GPRS/GSM to make the internet connection. 
Because GPRS is billed by the megabyte and this system will be running 
24hours a day for a week I don't really want Xastir's internet interface 
to be up and receiving all the incoming data all the time.

Ideally I'd like Xastir to only bring up the internet interface when a 
valid packet is received on the local RF interface.

Any ideas or is Xastir the wrong tool?

Thanks

Stuart
M1XTN