Hi Suresh,

I'm assuming you're trying to retrieve the client's local network address, which may be an RFC 1918 private IP behind some NAT device. You may be able to accomplish this via a client script using the methods described here: Can You Get A Users Local LAN IP Address Via JavaScript? - Stack Overflow

There is, to my knowledge, no way to do this purely on the server side within a business rule or script include. You would need a client script to run client-side JavaScript that could GlideAJAX the IP back to the server, at which point you could do something interesting with it.

Regards,

Scott Hall