code: String
  rrToString() {
  	StringBuffer sb = new StringBuffer();
  	sb.append(Address.toDottedQuad(address));
  	sb.append(" ");
  	sb.append(protocol);
  	for (int i = 0; i < services.length; i++) {
  		sb.append(" " + services[i]);
  	}
  	return sb.toString();
  }
docs: Converts rdata to a String