From: "Peña, Botp" <botp@...>
Date: 2008-06-17T08:58:21+09:00
Subject: Re: Can Ruby compare IPv6 ?

From: Iñaki Baz Castillo [mailto:ibc@aliax.net] 
# Hi, is there any cool way in Ruby to match two IPv6 that have 
# the same binary value? For example:
#   2001:0DB8:0:0::0:1428:57ab
#   is the same as:
#   2001:0DB8:0::0:1428:57ab
# Can Ruby match those two IPv6 easily without abing to parse 
# manually them?

require 'ipaddr'
#=> true

ip1= IPAddr.new "2001:0DB8:0:0::0:1428:57ab"
#=> #<IPAddr: IPv6:2001:0db8:0000:0000:0000:0000:1428:57ab/ffff:ffff:ffff:ffff:f
fff:ffff:ffff:ffff>

ip2= IPAddr.new "2001:0DB8:0::0:1428:57ab"
#=> #<IPAddr: IPv6:2001:0db8:0000:0000:0000:0000:1428:57ab/ffff:ffff:ffff:ffff:f
fff:ffff:ffff:ffff>

ip1==ip2
#=> true

kind regards -botp