> [snip]
> (cd /usr/src/etc && /usr/tools/bin/nbmake DESTDIR=/usr/local/build distrib-dirs)
> STRIP=/usr/tools/bin/i386--netbsdelf-strip /usr/tools/bin/nbinstall  -d -o root -g wheel -m 755 /usr/local/build
> /usr/tools/bin/nbmtree -def mtree/NetBSD.dist -p /usr/local/build/ -U 
> nbmtree: unknown group `ntpd'
> nbmtree: failed at line 677 of the specification
> *** Error code 1

Read the CVS Luke....

http://cvsweb.netbsd.org/bsdweb.cgi/basesrc/etc/mtree/NetBSD.dist.diff?r1=1.176&r2=1.177&f=h

and

http://cvsweb.netbsd.org/bsdweb.cgi/basesrc/etc/group.diff?r1=1.9&r2=1.10&f=h
> 
> Has anyone seen an error like this? There's no group like `ntpd'
> on my machine, nor is it necessary. I used the following command:
> 
Maybe the nbmtree code should look at the group and passwd files that are
in the $DEST directory?

In any case just add "ntpd:*:15:" to /etc/group

    David