Then the comment applies to the OP too.
$helpDec = sprintf("%d", $ip->{'tos'});
should be one of:
$helpDec = $ip->{'tos'};
$helpDec = 0+$ip->{'tos'};     # Convert string to number
$helpDec = int($ip->{'tos'});  # Convert string or number to integer

In reply to Re^4: Win32 TCP SYN messages by ikegami
in thread Win32 TCP SYN messages by jschollen

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