On 29 Oct 2013, at 09:24, Calvin Browne <cal...@orange-tree.alt.za> wrote:

> I'm going to point out that .se went down because of a problem right at this 
> point relativly recently.

IIRC, that problem had nothing to do with whether the TLD's NS RRset was in the 
zone or not. Something went wrong with zone file generation and that RRset got 
corrupted somehow. [When the authoritative NS RRset gets mangled, it doesn't 
matter if the targets of those NS records are inside or outside the zone.] 
Things still worked (sort of). The delegation info at the root was unchanged 
and valid. Resolvers got referrals to the authoritative .se name servers even 
though those servers might not have had NS records in the .se zone itself.

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