new

# File lib/resolv.rb, line 696
        def initialize(*nameserver_port)
          super()
          @nameserver_port = nameserver_port
          @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]
            sock = UDPSocket.new(af)
            sock.do_not_reverse_lookup = true
            sock.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC) if defined? Fcntl::F_SETFD
            DNS.bind_random_port(sock, bind_host)
            @socks << sock
            @socks_hash[bind_host] = sock
          }
        end