World IPv6 Launch, June 6th 2012

Marc Blanchet marc.blanchet at
Wed Jan 18 18:39:33 CET 2012

Le 2012-01-18 à 08:54, Jared Mauch a écrit :

> On Jan 18, 2012, at 8:47 AM, Bernhard Schmidt wrote:
>> Me too
>> Routing is a bit weird, the website CNAMEs to
>> Depending on the server I query I get different sets of
>> nameservers for, a[0-7] and
>> n[0-7] The a*-servers consistently send me across the
>> atlantic, the n*-servers would send me to Frankfurt. Which would be
>> almost as good as IPv4, but my resolvers consistently choose the
>> north-american route.
>> But it's usable, thanks to Akamai for doing the switch!
> I suspect that the various CDNs don't have quite the intelligence built
> into the systems for the IPv6 localization.  I figure this is due to their
> smaller sample size of IPv6 performance data as well as the fact you can
> have a large prefix covering a broad swath of space.  I know carriers
> with a single block covering all of their ARIN space it would be hard to
> localize queries to east/west/north/south regions.

but that intelligence can be grown to be more precise. as a /8 is not enough precise. So I agree that right now the data is probably not great, but it could be improved right away if they do their job.


> - Jared

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