[dns-operations] Akamai now works with ENT (Empty Non-Terminals)?

[Stephane Bortzmeyer]

It seems so. Instead of the erroneous NXDOMAIN, Akamain's
authoritative name servers apparently now reply with the correct
NOERROR for ENT (Empty Non-Terminals):

% dig @a9-64.akam.net A net.edgesuite.net

; <<>> DiG 9.10.3-P4-Debian <<>> @a9-64.akam.net A net.edgesuite.net
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52846
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;net.edgesuite.net.	IN A

;; AUTHORITY SECTION:
edgesuite.net.		180 IN SOA ns1-2.akamai.com. hostmaster.akamai.com. (
				1555143514 ; serial
				900        ; refresh (15 minutes)
				300        ; retry (5 minutes)
				604800     ; expire (1 week)
				180        ; minimum (3 minutes)
				)

;; Query time: 28 msec
;; SERVER: 2a02:26f0:117::40#53(2a02:26f0:117::40)
;; WHEN: Sat Apr 13 11:24:56 CEST 2019
;; MSG SIZE  rcvd: 109

So, it is now compatible with RFC 7816 and RFC 8020.