vnd & disklabel woes

Is anyone else seeing a problem with vnd disklabels on a
4.99.12 vintage
system?  If I configure a vnd, the first in-core label I get
looks a bit
wrong:

16 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 b:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 c:    524225        63     unused      0     0        #
(Cyl.      0*-    255)
 d:    524288         0     unused      0     0        #
(Cyl.      0 -    255)
 e:    524225        63     4.2BSD      0     0     0  #
(Cyl.      0*-    255)
 f:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 g:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 h:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 i:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 j:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 k:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 l:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 m:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 n:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 o:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)
 p:    524288         0     4.2BSD      0     0     0  #
(Cyl.      0 -    255)

The on-disk label has nothing wrong with it:

4 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a:    524225        63     4.2BSD   1024  8192 43688  #
(Cyl.      0*-    255)
 c:    524225        63     unused      0     0        #
(Cyl.      0*-    255)
 d:    524288         0     unused      0     0        #
(Cyl.      0 -    255)

And if I disklabel -R -r the latter onto the vnd, the
in-core label
is fixed.  So why is the initial label created incorrectly?

-- 
Antti Kantee <pookaiki.fi>                     Of course
he runs NetBSD
http://www.iki.fi/pooka/
                         http://www.NetBSD.org/
    "la qualité la plus indispensable du cuisinier est
l'exactitude"

I have had a problem with this as well; sometimes the first
vnd will
be listed by vnconfig -l as a non-vnd partition that's
already
mounted.  No idea yet why this is happening.

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established order, the
vague foreboding of something unknown, these are the heralds
of
approaching change.  The gradual crumbling that left
unaltered the
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illuminates the features of the new world."  --G.W.F.
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_Phenomenology of Spirit_ 5:11