DNS64

[Will241]

With all our nice IPv6 networks coming online and IPv6 only networks
foreseeable in the future what is Google doing to make this service
work well with IPv6?

Has the service got a IPv6 Address? AAAA records? DNS64?

[Paul S. R. Chisholm]

Google Public DNS has always returned AAAA records (as responses to
AAAA queries); no big deal, but no work left to do there. Currently,
Google Public DNS doesn't provide service on any IPv6 addresses the
way it does on the IPv4 addresses 8.8.8.8 and 8.8.4.4.

DNS64 -- returning IPv4 addresses encoded as IPv6 addresses -- is best
done elsewhere in the network. Doing that translation in a recursive
resolver (such as Google Public DNS) doesn't work well. It's also
inconsistent with one goal of Google Public DNS: returning the same
result you'd get if you resolved the same name down from the root.

Hope this helps. --PSRC

[Guillaume]

Hi Paul,

What about a public DNS that would be in Google's ipv6 dns whitelist?

On Feb 28, 1:19 pm, "Paul S. R. Chisholm" <psrchish...@gmail.com>
wrote:

[Paul S. R. Chisholm]

For those of you wondering what we're talking about:
http://en.wikipedia.org/wiki/IPv6_brokenness_and_DNS_whitelisting
http://www.google.com/intl/en/ipv6/

Putting Google Public DNS on the IPv6 whitelist (for Google's
authoritative nameservers) would result in IPv6 brokenness for some
Google Public DNS users. Yes, there are technical tweaks that could be
applied; yes, we've discussed them.

Hope this helps. --PSRC

[xorax]

Hi,

Why does not made an other Google Public DNS only on IPv6 address for
resolve AAAA records on it, and not on actual IPv4 DNS ?
If user has IPv6 active, he may use IPv6 DNS and access to AAAA
records, else he use IPv4 DNS.

Actualy, The IPv6 addresses for all google domains cannot be found.


On Mar 7, 1:13 pm, "Paul S. R. Chisholm" <psrchish...@gmail.com>
wrote:

> For those of you wondering what we're talking about:
>  http://en.wikipedia.org/wiki/IPv6_brokenness_and_DNS_whitelisting
>  http://www.google.com/intl/en/ipv6/
>
> Putting Google Public DNS on the IPv6 whitelist (for Google's
> authoritative nameservers) would result in IPv6 brokenness for some
> Google Public DNS users. Yes, there are technical tweaks that could be
> applied; yes, we've discussed them.
>
> Hope this helps.  --PSRC
>

[Alex Smith]

You'll only get Google's AAAA records if you are resolving it through
a DNS Resolver that has an agreement to serve and support IPv6
connectivity to their clients (like tunnelbroker.net does).

Though the "normal" DNS servers, including GPDNS you'll only get the A records.

Kind Regards,
Alex Smith

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