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Re: [DNSOP] Using the SOA in a NXDOMAIN response (Was: [internet-drafts@ietf.org: I-D Action: draft-bortzmeyer-dnsop-nxdomain-cut-00.txt]

"John Levine" <johnl@taugh.com> Fri, 13 November 2015 20:13 UTC

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Subject: Re: [DNSOP] Using the SOA in a NXDOMAIN response (Was: [internet-drafts@ietf.org: I-D Action: draft-bortzmeyer-dnsop-nxdomain-cut-00.txt]
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>It can mean only one thing, that bar.example does not exist. How could
>it be different?

My name server (running NSD) appears to disagree with you.  This is real data, feel
free to poke at it yourself.

$ dig @sdn.iecc.com bogus.www.examp1e.com a

; <<>> DiG 9.8.3-P1 <<>> @sdn.iecc.com bogus.www.examp1e.com a
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 9914
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;bogus.www.examp1e.com.		IN	A

;; AUTHORITY SECTION:
examp1e.com.		3600	IN	SOA	ns1.he.net. hostmaster.examp1e.com. 2015111219 10800 900 604800 7200



$ dig @sdn.iecc.com www.examp1e.com a

; <<>> DiG 9.8.3-P1 <<>> @sdn.iecc.com www.examp1e.com a
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9303
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.examp1e.com.		IN	A

;; ANSWER SECTION:
www.examp1e.com.	3600	IN	CNAME	ghs.googlehosted.com.

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