Ruby on Rails

Is there any way to create IP address range? like 192.168.0.1/24.
It's too annoy to create a data each time.
I find a Rubygems' ipaddress.
http://rubygems.org/gems/ipaddress.
I would like to take this to created IP range.

in new.heml.erb

<%= f.lable :iprange %>
<%= f.text.field :iprange %>

I don't how do used it in the rails' models

ip = IPAddress("192.168.0.1/24")
ip.each do |i|
p i.to_s
end

Somebody can give me some guide.

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