Mostly OK, but
>* why SOA records are not usable here
I would remove all of the discussion about SOA. You cannot infer
anything about the structure of the zone from the SOA other than the
obvious fact that the SOA is the root of the zone.
For the cache purges, I'd say that the cache SHOULD purg
On Sun, Nov 22, 2015 at 11:33:21AM -0800,
internet-dra...@ietf.org wrote
a message of 44 lines which said:
> Title : NXDOMAIN really means there is nothing underneath
> Authors : Stephane Bortzmeyer
> Shumon Huque
> Filename
