[dns-operations] negative caching weirdness

[Mark Andrews]

recursive servers enforce ttl limits

In message <571A5EFF.9010704 at switch.ch>, Daniel Stirnimann writes:
> Found one error myself.
> 
> This command should have been without the query type soa in which case
> it returns 86400.
> 
> > dig @demand.beta.aridns.net.au. alsdfjalsjdfasdf.haus. soa
> > 
> > ; <<>> DiG 9.8.3-P1 <<>> @demand.beta.aridns.net.au.
> > alsdfjalsjdfasdf.haus. soa
> > ; (2 servers found)
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 43473
> > ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> > ;; WARNING: recursion requested but not available
> > 
> > ;; QUESTION SECTION:
> > ;alsdfjalsjdfasdf.haus.		IN	SOA
> > 
> > ;; AUTHORITY SECTION:
> > haus.			0	IN	SOA	demand.alpha.aridns.net.au. hostmaster.rights
> ide.co.
> > 1461326169 1800 900 604800 86400
> > 
> > ;; Query time: 22 msec
> > ;; SERVER: 2001:dcd:2::7#53(2001:dcd:2::7)
> > ;; WHEN: Fri Apr 22 14:00:55 2016
> > ;; MSG SIZE  rcvd: 124
> 
> Now, the only strange result left is if I look up the name using my
> local resolver which returns 10800.
> 
> Daniel
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org