# File lib/Dnsruby/Resolver.rb, line 436
    def set_config_nameserver(n)
      # @TODO@ Should we allow NS RRSet here? If so, then .sort_by {rand}

      if (!@configured)
        @config.get_ready
      end
      @configured = true
      if (n).kind_of?String
        @config.nameserver=[n]
      else
        @config.nameserver=n
      end
      add_config_nameservers
    end