Re: AAAA's for www.netflix.com

[Joly MacFie <joly () punkcast com>]

> Netflix may have created its own IPv6-specific domain which is responsible
> for almost a third of all IPv6 traffic. If this is the case it might not be
> in full compliance with the spirit of World IPv6 Day, as the aim should
> have been for Netflix to operate one single domain with both AAAA records
> for IPv6 and A records for IPv4.


What about that?

j

On Fri, Jun 8, 2012 at 12:31 AM, David Temkin <dave () temk in> wrote:
> On 6/7/12 10:23 PM, Daniel Roesen wrote:
> > On Fri, Jun 08, 2012 at 12:11:20PM +1000, Mark Andrews wrote:
> > > > $ dig @pdns3.ultradns.org www.netflix.com. A +norec +short
> > > > wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com.
> > > > $ dig @pdns3.ultradns.org www.netflix.com. AAAA +norec +short
> > > > dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com.
> > > > $ dig @pdns3.ultradns.org www.netflix.com. ANY +short +norec
> > > > $
> > > >
> > > > Resolving www.netflix.com using ANY RRtype fails with an empty answer
> > > > section in the DNS response.
> > >
> > > Which is just plain BROKEN.
> >
> > Yup.
> >
> > > > This DNS trickery seems to be from the "taking a shower, trying not
> > > > to get wet" department. And has adverse effects in corner cases. While
> > > > playing around, I had periods of time where I couldn't resolve the FQDN
> > > > at all, possibly due some caching of the empty response.
> > >
> > > It's not DNS trickery.
> >
> > The "trickery" is returning different CNAMEs for QTYPE=A and QTYPE=AAAA.
> > I'm not sure what's the goal of that is, but it's 4am here so I have an
> > excuse of not seeing the light. :)
> >
> > Best regards,
> > Daniel
> We've confirmed that UltraDNS had "additional" issues caused by the push
> that they fixed for the previously reported problem.  We are actively
> engaged with them to come to a resolution.
>
> -Dave



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