#reading log file and assigning values
while ($lines = <LOG>){
    $remoteIP = $oldIP;
    ($remoteIP,$rfc,$userID,$dateTime,$timeZone,$requestType,$fileRequested,$requestProtocol,$statusCode,$sizeOfFile) = split ' ', $lines;

    if ($oldIP ne $remoteIP){
	$IPcount += 1;
    }

    print "$IPcount\n";

...