Query SOA for serial number in split DNS

[Chris Henderson]

I'm trying to write a program (either in Perl or C) which
will query my DNS servers to get the SOA of specific domains.

But my primary NS uses split DNS and my IP address cannot query the external
view. When I query, I only get the serial number of the internal view.

Is there any way to query the NS for both internal and external views and
make it think that I am coming from a 'different' IP address?

Thanks for any suggestions.