DNS/IPv6/fragmentationについて、ここに記述してください。

https://twitter.com/apnic/status/733181413374066688

http://blog.apnic.net/2016/05/19/fragmenting-ipv6/

1. Fragmentation is broken.

https://lists.dns-oarc.net/pipermail/dns-operations/2019-January/018302.html

Why would anyone want to do that? Fragmentation is broken.

I might be somewhat sympathetic to the underlying goal if fragmentation had any value whatsoever, but I just don't see that.

DNS server deployments are probably the worst offenders in this area because you *cannot* run a stateless IPv6 UDP server. The protocol simply does not allow it. In the real world, this is a protocol design error, and not a problem with server deployments.

Thanks, Florian