Stephane Bortzmeyer <bortzme...@nic.fr> wrote:
> Mark Andrews <ma...@isc.org> wrote:
> > Ted Lemon <mel...@fugue.com> wrote:
> > >
> > > If it has proof of non-existence for .alt cached, it doesn't need
> > > to ask any further questions to deny the existence of any
> > > subdomain of .alt.
> >
> > Which assumes agggressive negative caching.
>
> If by "aggressive negative caching", you mean
> draft-ietf-dnsop-nsec-aggressiveuse, then I disagree with you: it is
> *not* necessary (since the name is the same), you just need RFC 8020
> support.

For RFC 8020 to suppress these .alt leaked queries properly, you also need
qname minimization.

Tony.
-- 
f.anthony.n.finch  <d...@dotat.at>  http://dotat.at/  -  I xn--zr8h punycode
Fisher: East 5 to 7, occasionally gale 8 at first. Moderate or rough. Snow
showers. Moderate or good, occasionally very poor.

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