But if you have a primary that supports BULK and a secondary that doesn't,
then you have two authoritative servers for the same domain with the same
serial number but one of is saying NXDOMAIN when the other one returns a
positive answer.  This is a significant problem, and the draft ought to
address it.  (Or have I misunderstood something?)

That's exactly the problem -- a server that doesn't handle BULK will return the wrong answer. It might return the BULK record itself or NXDOMAIN for an address that BULK would synthesize.

Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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