ipaddr.rb - A class to manipulate an IP address
Copyright (c) 2002 Hajimu UMEMOTO <ume@mahoroba.org>.
All rights reserved.
You can redistribute and/or modify it under the same terms as Ruby.
$Id: ipaddr.rb,v 1.5.2.2 2005/01/19 09:14:42 usa Exp $
Example
require 'ipaddr'
ipaddr1 = IPAddr.new "3ffe:505:2::1"
p ipaddr1 #=> #<IPAddr: IPv6:3ffe:0505:0002:0000:0000:0000:0000:0001/ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff>
p ipaddr1.to_s #=> "3ffe:505:2::1"
ipaddr2 = ipaddr1.mask(48) #=> #<IPAddr: IPv6:3ffe:0505:0002:0000:0000:0000:0000:0000/ffff:ffff:ffff:0000:0000:0000:0000:0000>
p ipaddr2.to_s #=> "3ffe:505:2::"
ipaddr3 = IPAddr.new "192.168.2.0/24"
p ipaddr3 #=> #<IPAddr: IPv4:192.168.2.0/255.255.255.0>