I have this exact same machine and have netbooted the
nfsnetbsd.ecoff install kernel. I agree, usually it's your bootp
setup. IMHO you are better off not specifying a boot path in bootptab and
instead boot 6/tftp/nfsnetbsd.ecoff on your client. Running bootp in debug
mode should find your troubles if there aren't any errors posted in your
system log.

	Chris