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jorrizza/gist:1610632a07939910db23

Created July 16, 2014 16:24
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rfc4193
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gistfile1.rb
Array.new(2, ("fd" + SecureRandom.hex(5)).gsub(/([a-f0-9]{4})/, '\1:')).join(':/64 - ') + 'ffff::/64'
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