[dns-operations] Anyone from Google here?

[Mark Andrews]

Can you please explain why your servers are returning NOTIMP
for unknown types outside of the range reserved for meta types (128-255)?

The RFC compliant rcode is NOERROR for names that exist and NXDOMAIN for
names that do not exist.  See RFC3597.  

% dig @ns1.google.com google.com type1001 

; <<>> DiG 9.15.4+hotspot+add-prefetch+marka <<>> @ns1.google.com google.com type1001
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOTIMP, id: 40540
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;google.com.			IN	TYPE1001

;; Query time: 117 msec
;; SERVER: 216.239.32.10#53(216.239.32.10)
;; WHEN: Fri Apr 17 15:35:37 AEST 2020
;; MSG SIZE  rcvd: 39

% 

All this does is make it harder to deploy new DNS data types.  Is
that Google’s intention?

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka at isc.org