So far attempting to boot NetBSD-1.1 on an IPX diskless from a SunOS
4.1.4 box is not looking crash hot.

On first attempt I got:

ok boot net netbsd -s
Boot device: /sbus/le@0,c00000   File and args: netbsd -s     
b200 
>> NetBSD BOOT [$Revision: 1.4 $]
boot: client IP address: 144.136.188.248
boot: client name: h2
root addr=144.136.188.211 path=/export/root/h2
Booting netbsd @ 0x4000
974816-

Actually the last number is not correct as I copied that from the last
example...  at this point it hung, so I tried the netbsd.GENERIC
kernel which got as far as spotting the floppy controller, then panic'd. 

Unfortunately something that was output caused my xterm to reset its
saved lines so I could not scroll back much.  So I quit, kermit, reset
my xterm - checked that scroll back workd and started a script session
to capture the panic, and this time I just got:

ok boot net netbsd.GENERIC -s
Boot device: /sbus/le@0,c00000   File and args: netbsd.GENERIC -s     
b200 
>> NetBSD BOOT [$Revision: 1.4 $]
boot: client IP address: 144.136.188.248
boot: client name: h2
root addr=144.136.188.211 path=/export/root/h2
Booting netbsd.GENERIC @ 0x4000
974816-

Oh another thing I've noticed is that once boot gets running I can no
longer break to the monitor - I have to power cycle the box.

Hmmm maybe that 974816 _is_ magic, I just tried again and hung at the
same point...

tcpdump is saying:

03:32:41.399319 144.136.188.248.196 > 144.136.188.211.801: 104 read [|nfs]
03:32:41.401484 144.136.188.211.801 > 144.136.188.248.196: reply ok 1124 read [|nfs]
03:32:41.472229 144.136.188.248.197 > 144.136.188.211.801: 104 read [|nfs]
03:32:41.474797 144.136.188.211.801 > 144.136.188.248.197: reply ok 1124 read [|nfs]

when it hangs.