From: Brian Candler <b.candler@...>
Date: 2010-06-08T07:17:09+09:00
Subject: Re: IPAddress: new IP manipulation library

Aaron D. Gifford wrote:
> Without having looked at your library, does it support IP ranges (i.e.
> blocks of IP addresses that are contiguous but do not necessarily
> exactly match a subnet boundary)?   Perhaps as a separate class?

...or it could be just a regular Ruby range, like this:

>> require 'ip'
=> true
>> r = IP.new("10.0.0.6")..IP.new("10.0.0.10")
=> #<IP::V4 10.0.0.6>..#<IP::V4 10.0.0.10>
>> r.each { |x| p x }
#<IP::V4 10.0.0.6>
#<IP::V4 10.0.0.7>
#<IP::V4 10.0.0.8>
#<IP::V4 10.0.0.9>
#<IP::V4 10.0.0.10>
=> #<IP::V4 10.0.0.6>..#<IP::V4 10.0.0.10>

(It's an interesting idea that perhaps an IP object should be a 
start+end range, but then you need a way to show an IP as a string when 
it's not suitable for addr/len form)
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