Boot device: /sbus/le@0,c00000    File and args: netbsd -s
   ea00

this is tftp..

   >> NetBSD/sparc Secondary Boot, Revision 1.7
   >> (pk@flambard, Mon May 11 09:43:48 MEST 1998)
   boot: client IP address: 192.168.1.11
   boot: client name: lechuck
   Can't open network device `/sbus/le@0,c00000'
   open: netbsd: Unknown error: code 72
   device[/sbus/le@0,c00000]:

this is nfs.  72 is:

#define EBADRPC         72              /* RPC struct is bad */
   
   What does this mean? Why can't the network device be opened when that
   obviously was perfectly possible seconds earlier?

sounds like the linux NFS server is broken, or something.  use tcpdump
or equivalent and find out exactly what is happening on the network
to investigate further...


.mrg.