On 02/13/2011 11:35 AM, Stephane Bortzmeyer wrote:
On Sun, Feb 13, 2011 at 10:51:30AM +0000,
  Phil Mayers<p.may...@imperial.ac.uk>  wrote
  a message of 31 lines which said:

This is documented in the Bind ARM

OK, thanks, I missed this section.

i.e. the *presence* of the record is normal.

I'm not convinced (and the ARM is far from clear about it).

Well, you're correct that they are absent "most" of the time.

OTOH I have a zone (NSEC not NSEC3) which is managed by dynamic updates currently has a TYPE65534 at the apex, and the NSEC record names the TYPE65534 and it's RRSIG is valid - try:

dig +dnssec bar.ic.ac.uk

(assuming the TYPE65534 doesn't vanish... in the meantime)

IOW, it sounds like a bug in the code for NSEC3, because I think it works for NSEC.
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