On Mon, 28 Dec 2009, John Levine wrote:
But I see little wisdom in adding another does-not-exist name with
semantics not meaningfully different from .INVALID or FOO.INVALID.
I think the semantics are meaningfully different, in that applications
are allowed to know that .invalid is special, but should not know that
sink.arpa (or nonexistent.arpa) is special.
--apb (Alan Barrett)
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