On Tue, 4 Jan 2011, David F. Skoll wrote:

On Tue, 4 Jan 2011 06:18:55 -0800 (PST)
John Hardin <jhar...@impsec.org> wrote:

DNS needs to deal with an exponentially-increased address space
regardless of how RBLs behave. Perhaphs DNS caching needs to be
partitioned so that a huge number of queries on *.spamhaus.org don't
blow everything else out of the cache.

Right, but once your cache is blown, you're back to always querying
the authoritative server.  John Levine proposes a fix with a clever way
to represent many entries with a small number of queries so you don't blow
your cache.

In the vein of DNS changes needed for IPv6 (vs. simply SA and DNSBLs) what _other_ applications would benefit from JL's tree proposal? (I confess I haven't read the paper yet...)

I think making zone files available for download so you can run your own authoritative servers is another good approach, especially for whitelists.

Oh, agreed. But I don't think it's the _only_ alternative.

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