NAT64 and matching identities
Owen DeLong
owen at delong.com
Fri Nov 22 19:57:22 UTC 2013
I question how one can have a top 100 website without an A record.
I am inclined to believe there is a bug in there somewhere.
Owen
On Nov 22, 2013, at 10:18 AM, Tony Hain <alh-ietf at tndh.net> wrote:
> Lee Howard wrote:
> ...
>>>>> There is obviously a long tail of ip4 destinations, but nearly all
>>>>> of 500 of the Alexa global 500 have ip6 listeners,
>>>>
>>>> Do you have a data source for that? I see no indication of IPv6
>>>> listeners on 85% of the top sites.
>>>
>>> A slightly different metric, 44% of USA content available on IPv6:
>>>
>>> http://6lab.cisco.com/stats/
>>
>> Right, weighted by DNS queries.
>> Compare to http://www.vyncke.org/ipv6status/detailed.php?country=us
>> and http://www.employees.org/~dwing/aaaa-stats/
>>
>> Not equivalent to "nearly all of Alexa 500."
>
> Using a derivative of Dan Wings code from a couple of years back I get:
>
> The top 5 websites: AAAA records and IPv6 connectivity
> count with A: 5 (100.000%)
> count with AAAA: 4 ( 80.000%)
> Of the 4 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 4 (100.000%)
>
> The top 10 websites: AAAA records and IPv6 connectivity
> count with A: 10 (100.000%)
> count with AAAA: 6 ( 60.000%)
> Of the 6 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 6 (100.000%)
>
> The top 25 websites: AAAA records and IPv6 connectivity
> count with A: 25 (100.000%)
> count with AAAA: 10 ( 40.000%)
> Of the 10 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 10 (100.000%)
>
> The top 50 websites: AAAA records and IPv6 connectivity
> count with A: 50 (100.000%)
> count with AAAA: 21 ( 42.000%)
> Of the 21 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 21 (100.000%)
>
> The top 100 websites: AAAA records and IPv6 connectivity
> count with A: 98 ( 98.000%)
> count with AAAA: 30 ( 30.000%)
> Of the 30 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 30 (100.000%)
>
> The top 250 websites: AAAA records and IPv6 connectivity
> count with A: 248 ( 99.200%)
> count with AAAA: 56 ( 22.400%)
> Of the 56 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 56 (100.000%)
>
> The top 500 websites: AAAA records and IPv6 connectivity
> count with A: 494 ( 98.800%)
> count with AAAA: 91 ( 18.200%)
> Of the 91 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 91 (100.000%)
>
> The top 1000 websites: AAAA records and IPv6 connectivity
> count with A: 990 ( 99.000%)
> count with AAAA: 132 ( 13.200%)
> Of the 132 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 132 (100.000%)
>
> The top 2500 websites: AAAA records and IPv6 connectivity
> count with A: 2479 ( 99.160%)
> count with AAAA: 216 ( 8.640%)
> Of the 216 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 214 ( 99.074%)
>
> The top 5000 websites: AAAA records and IPv6 connectivity
> count with A: 4959 ( 99.220%)
> count with AAAA: 354 ( 7.083%)
> Of the 354 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 347 ( 98.023%)
>
> The top 10000 websites: AAAA records and IPv6 connectivity
> count with A: 9918 ( 99.230%)
> count with AAAA: 600 ( 6.003%)
> Of the 600 hosts with AAAA records, testing connectivity to TCP/80:
> count with IPv6 ok: 575 ( 95.833%)
>
> Original code developed by dwing at employees.org.
> manual run by tony on arabian.tndh.net using ./IPv6-check .
> on Fri Nov 22 09:48:17 PST 2013 (elapsed: 00:08:33, t: 15).
> Top 10000 websites based on Alexa top-1m.csv.
>
>
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