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paaloeye/gist:2a2ea076eb282abd2ed5

Created September 2, 2014 13:14
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gistfile1.rb
IPAddr.new('10.0.0.0/8').to_range.each_slice(256).map(&:first).map { |ip| ip.mask(8 * (4 - ip.to_s.split('.').reverse.take_while(&'0'.method(:==)).count)) }
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