Have you disabled extensions before booting?  I sometimes find that 
AppleTalk networking causes problems with the netbsd side.  Also, what 
kind of ethernet setup do you have?  There are generally just a few 
simple files, like hostname.ae0 that need to be setup.

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX