Re: [DNSOP] New Version Notification for draft-palet-sunset4-ipv6-ready-dns-00.txt

[Shane Kerr <[e-mail]>]

Stephane,

Stephane Bortzmeyer:
> On Mon, Nov 27, 2017 at 09:32:00AM +0000,
>  Shane Kerr <[e-mail]> wrote 
>  a message of 45 lines which said:
> 
>> I just ran a check, and there are 23 TLD without any name servers
>> that support IPv6.
> 
> Can you detail the methodology? For instance, did you measure what the
> root announces (the glue records), what the TLD announces (the
> authoritative AAAA records) or the reality (actual answers to DNS
> requets over IPv6).

I cleaned it up a bit and put it on GitHub:

https://github.com/shane-kerr/tldIPv6

In the README.md:

"Next it goes through each TLD and does an NS lookup to get the
authoritative list of name servers. It then tries each name server
returned until it finds one with an AAAA record. If none of the name
servers for a TLD have an AAAA record, then it is reported as not
supporting IPv6."

It wouldn't be too difficult to add checks to see that IPv6 works for at
least one of the AAAA returned, but I was mostly just looking to see if
each TLD is trying to provide IPv6, not how good of a job they are doing
at it (although the results file does log TLD that fail to resolve at
all, but that's a side effect of the process). :)

Cheers,

--
Shane