On Tue, Nov 17, 2020 at 10:51:45PM +0000,
 Tony Finch <[email protected]> wrote 
 a message of 32 lines which said:

> if the domain points at AS112 then almost anyone might receive the
> QNAME leakage; if the domain is unregistered and the resolver does
> qmin then there's less leakage.
> 
> This is really a general issue with split horizon DNS: whoever is
> assigning or giving advice about local/internal DNS needs to make
> it clear that the names aren't private and will leak.

Note that this is one of the reasons why draft-bortzmeyer-dname-root
was not a success: some people objected that AS 112 is not to be
trusted with "private" names.

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