Tableutil is a utility for converting, aggregating and performing operations 
on lists of IP-addresses. It's primary use is to convert files into a format 
pfctl(8) can read. 

It can read plain-text-files with ranges (123.123.123.123-234.234.234.234), 
CIDR-style networks (192.168.0.0/24) single addresses (242.242.242.242) or 
with hostnames (one.two.com). It can also read p2b files.

Author: jameskamlyn@gmail.com
WWW: http://expiretable.fnord.se/