[dns-operations] negative caching weirdness

[Daniel Stirnimann]

Thank you for the hint.

"The default max-ncache-ttl is 10800 seconds (3 hours)."
http://ftp.isc.org/isc/bind9/cur/9.9/doc/arm/Bv9ARM.ch06.html#Configuration_File_Grammar

Daniel

On 22.04.16 21:10, Mark Andrews wrote:
> 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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