Release all DHCP IP addresses (Perl)

This code can be found in Chapter 12 of Windows XP Cookbook

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# From the book "Windows XP Cookbook"
# ISBN: 0596007256

# ------ SCRIPT CONFIGURATION ------

use Win32::OLE;

$strComputer = '.';
# ------ END CONFIGURATION ---------
$objWMI = Win32::OLE->GetObject('winmgmts:\\\\' . $strComputer . '\\root\\cimv2');
$objAdapterConfig = $objWMI->Get('Win32_NetworkAdapterConfiguration');
$intRC = $objAdapterConfig->ReleaseDHCPLeaseAll();
if ($intRC == 0) {
    print "Released all DHCP IP addresses\n";
}
elsif ($intRC == 1) {
    print "You must reboot to release all DHCP IP addresses\n";
}
else {
    print 'There was an error releasing all DHCP IP addresses: ' . $intRC, "\n";
}

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