[dns-operations] Authoritative name server replies NODATA for a non-existing domain

[Michał Kępień]

> Yes, its due to bug:
> 
> 	• Fix RCODE when secondary NSD got transfer that includes deleted wildcard record. After deletion, NSD would serve NODATA, should be NXDOMAIN (thanks Michal Kepien).

This is fun - I never expected this bug to be publicly noticed for a
TLD. It's only observable in the time span between wildcard record
removal and the next run of "nsdc patch" on the slave. Looks like
Stephane caught .adult with their pants down ;) (pun intended)

-- 
Best regards,
Michał Kępień