[ietf-dkim] Re: DNS wildcarding behavior scenarios

Frank Ellermann nobody at xyzzy.claranet.de
Mon Jun 18 11:16:56 PDT 2007


Hector Santos wrote:

> Seems pretty clear in STD 13.
> What am I missing here?

Nothing, it's only not obvious, and Michael just stumbled over it:

Queries for this.is.a.wild.example won't "see" the wild.example
if it's "blocked" by an "existing" a.wild.example, where "existing"
means "any RR".  

He'd have to "reinsert" the blocked wildcard at is.a.wild.example.

I hope I got that right, because I've no way to verify it.  The
intuitive ideas would be "only the same RR can block a wildcard",
or "only a SoA can block a wildcard", but that's not how it works.

Please correct me, 

 Frank




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