}
attr = binding.get(PORT);
writeAttribute(writer, Attribute.PORT, attr.asString());
attr = binding.get(FIXED_PORT);
if (attr.isDefined() && attr.asBoolean()) {
writeAttribute(writer, Attribute.FIXED_PORT, attr.asString());
}
attr = binding.get(MULTICAST_ADDRESS);
if (attr.isDefined()) {
writeAttribute(writer, Attribute.MULTICAST_ADDRESS, attr.asString());