NAT64/DNS64 detection via SRV Records

Document Type Expired Internet-Draft (v6ops WG)
Author Martin Hunek 
Last updated 2019-09-12 (latest revision 2019-03-11)
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies the way of discovering the NAT64 pools in use as well as DNS servers providing DNS64 service to the local clients. The discovery is done via SRV records, which also allows asignment of priorities to the NAT64 pools as well as DNS64 servers. It also allows clients to have diferent DNS providers than NAT64 provider, while providing a secure way via DNSSEC validation of provided SRV records. This way, it provides DNS64 service even in case where DNS over HTTPS is used.


Martin Hunek (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)