IPv6 at 50% for VZW (Re: NAT IP and Google)

Wed May 28 22:29:35 UTC 2014

On May 22, 2014, at 9:18 PM, Matthew Petach <mpetach at netflight.com> wrote:

> On Thu, May 22, 2014 at 8:49 AM, Lee Howard <Lee at asgard.org> wrote:
> 
>> 
>> 
>> On 5/22/14 8:04 AM, "Livingood, Jason" <Jason_Livingood at cable.comcast.com>
>> wrote:
>> [snip] 
>> In his really useful listing of content providers' IPv6 support,
>> https://www.vyncke.org/ipv6status/  Eric Vyncke has added "CDN" to sites
>> using an identifiable CDN.
>> 
> 
> I suspect there's a problem with
> the data collection on that site;
> looking at
> https://www.vyncke.org/ipv6status/detailed.php?country=us
> I really don't think the top 5 players
> don't support IPv6 DNS queries at all.
> I'd be curious to know more about how the
> data there is collected; I don't see any links
> to any description of the data collection
> methodology on the site.
> 
> Matt

The data is correct — The top 5 players on that page do not have AAAA records published for their authoritative name servers (despot all being v6-capable for most or all of their content):

ryan at lion:~$ echo google.com facebook.com youtube.com yahoo.com wikipedia.org | xargs -n1 dig +short -t NS | xargs -n1 dig +short -t AAAA
ryan at lion:~$ 

(no results for the authoritative servers of all 5 domains)

ryan at lion:~$ echo google.com facebook.com youtube.com yahoo.com wikipedia.org | xargs -n1 dig +short -t NS | xargs -n1 dig +short -t A
216.239.34.10
216.239.32.10
216.239.38.10
216.239.36.10
69.171.239.12
69.171.255.12
216.239.38.10
216.239.34.10
216.239.36.10
216.239.32.10
68.180.131.16
119.160.247.124
203.84.221.53
68.142.255.16
121.101.144.139
98.138.11.157
91.198.174.239
208.80.152.214
208.80.154.238
ryan at lion:~$ 

(19 A record total results for the 5 domains in question)

The same query done together with host(1), excluding various MX responses, which would show v6 answers alongside the v4:
ryan at lion:~$ echo google.com facebook.com youtube.com yahoo.com wikipedia.org | xargs -n1 dig +short -t NS | xargs -n1 host | grep -v mail
ns1.google.com has address 216.239.32.10
ns2.google.com has address 216.239.34.10
ns4.google.com has address 216.239.38.10
ns3.google.com has address 216.239.36.10
b.ns.facebook.com has address 69.171.255.12
a.ns.facebook.com has address 69.171.239.12
ns4.google.com has address 216.239.38.10
ns2.google.com has address 216.239.34.10
ns1.google.com has address 216.239.32.10
ns3.google.com has address 216.239.36.10
ns5.yahoo.com has address 119.160.247.124
ns2.yahoo.com has address 68.142.255.16
ns3.yahoo.com has address 203.84.221.53
ns1.yahoo.com has address 68.180.131.16
ns4.yahoo.com has address 98.138.11.157
ns6.yahoo.com has address 121.101.144.139
ns0.wikimedia.org has address 208.80.154.238
ns1.wikimedia.org has address 208.80.152.214
ns2.wikimedia.org has address 91.198.174.239
ryan at lion:~$ 