DNS/返答/minimal-responses/KnotDNSについて、ここに記述してください。

https://lists.nic.cz/pipermail/knot-dns-users/2015-September/000710.html

Every resolver SHOULD be asking for the NS records from the child zone in parallel

We are not living in the pre-Kaminski world anyone,
 every piece of information that is used in resolution SHOULD be of highest credibility. 

I support what Knot is doing i.e. only minimal answers,

Olafur