May 4, 2020
4:06 p.m.
On 04/05/2020 17:01, Fred Baker wrote:
So, is it reasonable to say that the ability to pose a DNS request and receive a response using TCP, and using TCP as the fallback transport when TC is invoked, is a requirement of a modern resolver?
Yes, absolutely. See RFC 7766 (which strictly refers specifically to implementation) and draft-ietf-dnsop-dns-tcp-requirements (which relates to operationand configuration). Ray