Maintained by: NLnet Labs

[Unbound-users] Unbound doesn't cache ANY query result from some DNSSEC-signed zone

Matthijs Mekking
Wed Jul 24 09:49:32 CEST 2013


On 06/28/2013 07:10 PM, Daisuke HIGASHI wrote:
> Hi,
> 
> 2013/6/10 W.C.A. Wijngaards <wouter at nlnetlabs.nl>:
> 
>> cache-min-ttl could perhaps change unbound's behaviour here.
> 
>   Thank you for your suggestion and I confirmed
> that "cache-min-ttl: <small number>" leads Unbound to cache
> such ANY-query results.
> 
> 2013/6/10 Peter Koch <pk at denic.de>:
>> I am not convinced that implementing ANY as 'all', encouraging
>> false expectations, is really the right thing to do.
>> Additionally, in the context of recent events - even if unbound
>> would only rarely be run as open recursive - it 'helps' authoritative
>> servers to see more queries.
> 
>   At nameserver-side, giving non-zero TTL for NSEC3PARAM records
> might be an workaround against this issue.
> Unfortunately OpenDNSSEC decided to set zero-TTL
> to NSEC3PARAM of signing zones [1].
> 
> [1] https://issues.opendnssec.org/browse/OPENDNSSEC-330

FYI: We are going back to default TTL in the upcoming patch versions for
OpenDNSSEC 1.3 and 1.4

Best regards,
  Matthijs


> 
> Regards,
> --
>  Daisuke HIGASHI <daisuke.higashi at gmail.com>
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