What does "addnode: NSEC node already exists" mean?

[Mark Andrews]

In message <4E4481EA.9020304 at dougbarton.us>, Doug Barton writes:
> On 08/11/2011 06:09, Alexander Gall wrote:
> > I have a signed zone for which dnssec-signzone and named-checkzone of
> > BIND 9.8.0-P4 emit the message in the subject several times.  This
> > appears to happen in loadnode() defined in lib/dns/rbtdb.c and has
> > something to do with an "auxiliary tree for NSEC", whatever exactly
> > that is.  It doesn't tell me which NSEC record it's complaining about,
> > though.
> > 
> > Any suggestions by the ISC folks what this is about before I dig into
> > it deeper?
> 
> I'm not from ISC, but I would think the first step would be to try the
> 9.8.1 beta and see if the problem persists there.

It can safely be ignored.
 
> hth,
> 
> Doug
> 
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> 
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Mark Andrews, ISC
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PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org