[c-nsp] IPV6 again

Phil Mayers p.mayers at imperial.ac.uk
Wed Feb 3 07:01:57 EST 2010

On 03/02/10 10:57, Dale Shaw wrote:
> Hi,
> On Wed, Feb 3, 2010 at 9:37 PM, Tom Lanyon<tom at netspot.com.au>  wrote:
>> They are not handing out an AAAA for www.youtube.com but most of the content
>> (img+video) servers are on v6.
> Hmm, really?
> I'm speaking to www.youtube.com (youtube-ui.l.google.com) on 2001:4860:c004::64

Hmm. Nope - ns4.google.com returns A records only for me.

A colleague suggests it's this:


You are maybe on a provider who has this enabled?

Does anyone know the details - do the google DNS servers choose to reply 
with AAAA based on AS-path of the querying IP, or netblock? Inbound 

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