nanog mailing list archives
Re: IPv6 at 50% for VZW (Re: NAT IP and Google)
From: Matthew Petach <mpetach () netflight com>
Date: Wed, 28 May 2014 20:37:07 -0700
On Wed, May 28, 2014 at 3:29 PM, Ryan Rawdon <ryan () u13 net> wrote:
On May 22, 2014, at 9:18 PM, Matthew Petach <mpetach () netflight com> wrote: On Thu, May 22, 2014 at 8:49 AM, Lee Howard <Lee () asgard org> wrote: On 5/22/14 8:04 AM, "Livingood, Jason" <Jason_Livingood () 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@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@lion:~$ (no results for the authoritative servers of all 5 domains) ryan@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@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@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@lion:~$
Aha! Thank you for the clarification, Ryan; the page is somewhat confusing, as it seemed like it was saying there was no quad-A support from the DNS servers; but what it's actually saying is that the DNS servers support IPv6 queries, but only over IPv4 transport. Thank you for explaining the methodology behind the report. It would definitely be useful for the site to have a link explaining the nature of the tests being done, to avoid similar confusion on the part of others who see it. Thanks! Matt
Current thread:
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google), (continued)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Julien Goodwin (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Christopher Morrow (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Geoff Huston (May 23)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Rubens Kuhl (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Martin Hannigan (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Martin Hannigan (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Lee Howard (May 23)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Lee Howard (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Matthew Petach (May 22)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Ryan Rawdon (May 28)
- Re: IPv6 at 50% for VZW (Re: NAT IP and Google) Matthew Petach (May 28)
- Re: NAT IP and Google Mark Andrews (May 21)
- Message not available
- Re: NAT IP and Google Larry Sheldon (May 21)
- Re: NAT IP and Google Derek Andrew (May 22)
- Re: NAT IP and Google Royce Williams (May 22)
- Re: NAT IP and Google Chris Adams (May 22)
- Re: NAT IP and Google Chris Garrett (May 20)
- Re: NAT IP and Google Kevin Kadow (May 20)
- Re: NAT IP and Google Owen DeLong (May 21)