class Gem::Resolv::DNS::Requester::UnconnectedUDP

def lazy_initialize
  @mutex.synchronize {
    next if @initialized
    @initialized = true
    @socks_hash = {}
    @socks = []
    @nameserver_port.each {|host, port|
      if host.index(':')
        bind_host = "::"
        af = Socket::AF_INET6
      else
        bind_host = "0.0.0.0"
        af = Socket::AF_INET
      end
      next if @socks_hash[bind_host]
      begin
        sock = UDPSocket.new(af)
      rescue Errno::EAFNOSUPPORT, Errno::EPROTONOSUPPORT
        next # The kernel doesn't support the address family.
      end
      @socks << sock
      @socks_hash[bind_host] = sock
      sock.do_not_reverse_lookup = true
      DNS.bind_random_port(sock, bind_host)
    }
  }
  self
end