In article <037201d1db19$78c3ac90$6a4b05b0$@cn> you write: >When I first looked into DNS, I was recommended with a complex figure of DNS >protocol family describing the dependency and activeness of many RFC >documents. I'm wondering if it is possible to attach versions to DNS >protocol similar like IPv4 and IPv6, http/1.1 and HTTP/2 which can give >clear path of DNS evolution and help to keep protocol conformance.
In a word, no. EDNS0 is the closest thing we have to versioning, and even though it's designed to be as backwards compatible as possible, things still break. The main problem is that there's a lot of dusty old firewalls and the like that have dusty old software with a rigid and obsolete idea of what DNS packets to allow through. We all would like people to get with the program and use less cruddy and obsolete software, but good luck with that. R's, John _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
