Rahul Gupta,

$src_host = "192.1.2.2"; # The source IP/Hostname
$dst_host = "192.1.2.3"; # The Destination IP/Hostname
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I believe the addresses you are using are real Internet addresses. The private addresses are:

If you are behind a NAT firewall/router, it doesn't matter since those addresses aren't visible to the Internet. But if you are using a non-NAT device to get to the internet, those addresses will be routed on the Internet and may give you some strange and interesting results :-)

Good Luck...Ed