[dns-operations] Ultra DNS responding with NXDOMAIN for "www.uber.com"

[Dave Lawrence]

Viktor Dukhovni writes:
> Well, in this particular case queryes with rtype DS for "cfe.uber.com"
> do get NXDOMAIN, while queries of type NS do not.

Ooooooh my bad.  Yeah, that's hard broken. I can guess at the code
path that is causing this set of symptoms, and expect that at least
that until the code is fixed the underlying data can be touched up so
as to not trigger this problem.