2026

DNS over CoAP (RFC 9953, proposed IETF standard) and Application-Layer Protocol Negotiation (ALPN) ID for CoAP over DTLS (RFC 9952, informational) have finally been published as RFCs.

M. S. Lenders, C. Bormann, T. C. Schmidt and M. Wählisch, "A Leaner and Faster Web: How CBOR Can Improve Dynamic Content Encoding in JSON and DNS over HTTPS," in IEEE Transactions on Network and Service Management,