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[dns-wg] Re: Re: IPv6 glue AAAA RRs in the root zone
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Joao Damas
Joao_Damas at isc.org
Thu Jul 22 11:46:16 CEST 2004
On 21 Jul, 2004, at 11:50, Brad Knowles wrote: > At 10:11 AM +0100 2004-07-21, Jim Reid wrote: > >> Personally, I don't see why you care about the RTT to a root server. >> A >> well-behaved name server will make 4-5 queries to a root server once >> a >> week or so. Why optimise that? Please note I'm not suggesting that >> it's OK for root servers to have lousy RTTs. My name server is in >> regular, frequent contact with other name servers that have RTTs >> longer than 200ms. > > Well, I'm not an IPv6 expert by any stretch of the imagination, but > the impression I got was that if you were IPv6-only, and all the root > nameservers you can reach via IPv6 are routed via highly undesirable > paths, then you would be in a pretty bad situation. It's fine for > some of those IPv6 addresses to be non-production or very > sub-optimally routed, but I think the problem comes from when that > happens to all of them. > > At least, that was my take. > >> Well, what other choice is there? :-) And anyway, since the >> overwhelming >> bulk of the world's name servers are IPv4-only, resolution over IPv6 >> doesn't seem to be a particularly productive exercise. > > True enough. True enough for what subset of users? If the a user is interested in only a few and those provide the service that user needs and uses, what does he/she care about a million servers out there? The problem here is that this initial missing link does not enable a user that could be IPv6 only and live without a NAT, to do so. It is this lack of enabling that is the problem from my point of view. Joao
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