Here’s an analysis of measurement of issues with IPv6 and DNS resolvers from a few years ago...https://www.potaroo.net/presentations/2017-09-29-xtn-hdrs-dns.pdf
I have not returned to this measurement for some years as there appeared to be little interest in the results right up until now! If there is interest in this measurement work about the DNS, large responses and IPv6 failure rates from the working group I’m sure it can be revived! Geoff On 10 Nov 2023, at 11:35 am, Erik Nygren <erik+i...@nygren.org> wrote: Thank you for writing this up! I think this is long-overdue and I'd be supportive of the dnsop working group adopting this. (It seems to make more sense for me to do this in dnsop while keeping v6ops informed.) We likely will want to cover the concerns that Geoff raises around fragmentation, but it would be better to give guidance around addressing those issues. There is already very substantial deployment of IPv6 among DNS authorities and it is widely used by DNS recursive. I don't have numbers handy at the moment, but it would not surprise me if a significant portion of recursive-to-authoritative traffic is already IPv6. Given that, we need to fix issues there. Enabling IPv6-only networks to work is important and is starting to be practical in some scenarios. DNS is one of the bigger blocking points, and excellent progress has already been made. NIST has an IPv6 and DNSSEC deployment tracker: https://fedv6-deployment.antd.nist.gov/cgi-bin/generate-com For the tracked "industry" domains (still US-centric), IPv6 has gone from 10% IPv6 for DNS authorities to over 70% and is still growing. (DNSSEC-signed is still well below 10%). At least some governments are also requiring IPv6 DNS authorities for everything in the resolution chain, at least for some industries. We're far enough into this transition already on the authoritative DNS side that this is long overdue and in some ways may be defining existing best practices. Erik
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