Intermittent NXDOMAIN, (possibly) Bind or PowerDNS problem?

Ian B porjo38 at yahoo.com.au
Fri Feb 5 03:34:45 UTC 2010


Hi All,

I found a post on this list from July 2009 with the subject:
"Intermittent NXDOMAIN, Bind 9.2.3 config and PowerDNS problem?"

https://lists.isc.org/pipermail/bind-users/2009-July/077045.html

I'm having exactly the same issue but with hostname dreamteam.afl.com.au

A sample dig is as follows:

$ dig dreamteam.afl.com.au 

; <<>> DiG 9.3.4-P1 <<>> dreamteam.afl.com.au
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22236
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;dreamteam.afl.com.au.		IN	A

;; ANSWER SECTION:
dreamteam.afl.com.au.	30	IN	CNAME	afl.virtualsports.com.au.

;; AUTHORITY SECTION:
com.au.			60	IN	SOA	stl-bpc-gslb1500-1.bigpond.com. hostmaster.stl-bpc-gslb1500-1.bigpond.com. 4 10800 3600 604800 60

;; Query time: 53 msec
;; SERVER: 203.161.127.1#53(203.161.127.1)
;; WHEN: Fri Feb  5 11:29:24 2010
;; MSG SIZE  rcvd: 147


My understanding of the issue is that the authoritative nameserver for dreamteam.afl.com.au is returning the incorrect data in the 'AUTHORITY SECTION' causing PowerDNS to act unpredictably. Other DNS recursors may not have an issue with this, as they overlook the error. Is that a correct understanding?

Thanks,
Ian.


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