unbound NXDOMAIN TTL shared between records

Daisuke HIGASHI daisuke.higashi at gmail.com
Fri Aug 21 15:34:41 UTC 2015

Hi, Patrik -

> which also suspiciously seems to use the SOA TTL of 7200
> rather than the NXDOMAIN TTL of 18000

That is how negative cache TTL is calculated (by authoritative server).
RFC2308 reads:

  (Negative cache) TTL is taken from the minimum of the SOA.MINIMUM field
   and SOA's TTL.


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