[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Teredo server selection
-----BEGIN PGP SIGNED MESSAGE-----
On 23/12/2007, at 11:28 AM, Florian Weimer wrote:
> * Nathan Ward:
>> 1) Lookup A record for `_teredo._udp.arpa.' (or whatever. Note the
>> trailing . - we don't want to be looking up
>> `_teredo._udp.arpa.defaultdomain' etc.)
> You should really discuss this with DNS people. This is a very bad
> because it produces lots of pointless queries which need to be handled
> somewhere, probably on a production name server.
You are talking about the use of .arpa, I assume, and query load on
the root servers?
I think I understand the concern, but negative caching would deal with
this, same as it does for .local., .invalid., etc. The negative TTL on
both .arpa and . is 86400s.
We're only talking about 1 query each time the Teredo client boots, so
load on ISPs' recursive nameservers is not large - my laptop does
several queries per minute when idle, let alone at boot time or when
it's actively doing something.
-----BEGIN PGP SIGNATURE-----
Version: PGP Desktop 9.7.0 (Build 867)
-----END PGP SIGNATURE-----