On Tue, Jan 06, 2015 at 07:19:31AM -0800, Paul Vixie <p...@redbarn.org> wrote a message of 137 lines which said:
> that's true in an empty cache. but that emptiness will be short lived. > at stead state, query-minimization has no more queries than > longest-match. And this point is already mentioned in the draft. Section 3 of -00: Qname minimisation can decrease performance in some cases, for instance for a deep domain name (like www.host.group.department.example.com where host.group.department.example.com is hosted on example.com's name servers). For such a name, a cold resolver will, depending how qname minimisation is implemented, send more queries. Once warm, there will be no difference with a traditional resolver. A possible solution is to always use the traditional algorithm when the cache is cold and then to move to qname minimisation. This will decrease the privacy a bit but will guarantee no degradation of performance. > the qtype on those doesn't matter. they should probably use the > original qtype, There is a (very) small gain in privacy by using a "neutral" qtype such as A or NS, especially for rare qtypes likes LOC or SRV. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
