Additionally, java and python both support unknown types. Adding new types in both of these appears to be straight forward. C has always suppported unkown types. If your favourite language / OS doesn't support unknown types complain to the developer / vendor. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@xxxxxxx _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf