According to Anders Eriksson <aer@cdt.luth.se> :
> 
> Has the nfs subsystem changes to 1.3.1?
> 
I have found it impossible to mount reliably NFS-exported filesystems 
from NetBSD 1.3 (not sure about 1.3.1) to 1.2.1 and 1.1 clients.  The 
mount succeeds but any access is rejected, even simple directory 
listings, with permission denied diagnostics.

I have some additional interesting issues to raise about compatibility 
with Plan 9's NFS server, but these are of secondary importance.

I would also appreciate some insights on changes to NFS server and/or 
client in 1.3 and 1.3.1 that may explain this behaviour.
-- 
Lucio de Re (lucio@proxima.alt.za)
Disclaimer: I'm working at getting my opinions to agree with me.