# File lib/s3/right_s3_interface.rb, line 102
    def is_dns_bucket?(bucket_name)
      bucket_name = bucket_name.to_s
      return nil unless (3..63) === bucket_name.size
      bucket_name.split('.').each do |component|
        return nil unless component[/^[a-z0-9]([a-z0-9-]*[a-z0-9])?$/]
      end
      true
    end