RCODE of response for Meta or Deprecated QTYPE query.

Target Authoritative Servers

• Bind: 9.11.4-P2
• NSD: 4.1.25
• PowerDNS Authoritative Server 4.1.4
• Knot DNS

Types

• TKEY
• TSIG
• OPT
• MAILA
• MAILB

EXAMPLE

$ dig @127.0.0.1 localhost OPT

; <<>> DiG 9.11.4-P2 <<>> @127.0.0.1 localhost OPT
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 29060
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 2641b2f3273b359cc0f044175bbc085863b83429208eb0a8 (good)
;; QUESTION SECTION:
;localhost.                     IN      OPT

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Oct 09 10:46:00 JST 2018
;; MSG SIZE  rcvd: 66

RESULT

QTYPE	BIND 9.11.4-P2	NSD 4.1.25	PowerDNS 4.1.4	Knot DNS 2.7.2
TSIG	FORMERR	NODATA	NODATA	NODATA
TKEY	FORMERR	NODATA	FORMERR	NODATA
OPT	FORMERR	NODATA	NODATA	NODATA
MAILA	NOTIMP	NODATA	NODATA	NODATA
MAILB	NOTIMP	NODATA	NODATA	NODATA