def root?
  true
end

def query_udp(packet, packet_data)
  ans = nil
  response = ""
  @config[:nameservers].each do |ns|
    begin
      @config[:udp_timeout].timeout do
        @logger.info "Contacting nameserver #{ns} port #{@config[:port]}"
        ans = if ns.ipv6?
          socket = UDPSocket.new(Socket::AF_INET6)
          socket.bind(@config[:source_address_inet6].to_s,@config[:source_port])
          socket.send(packet_data, 0, ns.to_s, @config[:port])
          socket.recvfrom(@config[:packet_size])
        else
          socket = UDPSocket.new
          socket.bind(@config[:source_address].to_s,@config[:source_port])
          socket.send(packet_data, 0, ns.to_s, @config[:port])
          socket.recvfrom(@config[:packet_size])
        end
      end
      break if ans
    rescue TimeoutError
      @logger.warn "Nameserver #{ns} not responding within UDP timeout, trying next one"
      next
    ensure
      socket.close
    end
  end
  ans
end