Hi,

2013/6/10 W.C.A. Wijngaards <[email protected]>:

> 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 <[email protected]>:
> 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

Regards,
--
 Daisuke HIGASHI <[email protected]>
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