Need help with NFS on Personal IRIS

[Steve Rezsutek]

I've recently been given charge of a Personal IRIS, and it the process
of "bringing it into the fold", have encountered some difficulty in 
setting up NFS mounts from it to other machines. 

If I export a file system to the world at large, all seems fine. The 
difficulty surfaces when I attempt to restrict access to a specific
set of machines, using any combination of specifying the hosts and/or
the -access= option in /etc/exports:

  /usr/people -rw,anon=nobody foo bar
  /usr/people -rw,anon=nobody foo.my.domain bar.my.domain
  /usr/people -rw,anon=nobody,-access=foo:bar

and even

  /usr/people -rw,anon=nobody,-access=foo:bar foo bar 

all have the same effect, namely to deny *all* access, period.
Curiously(?), this setup *does* work, even though it isn't what 
I'm after:

  /usr/people -rw=foo:bar,anon=nobody

The other machines (Sun3s and DECstations) seem to function properly
when asked to behave in this manner. The machines are all in each 
others hosts tables, and I am not currently using NIS [nee YP]. The 
IRIS is running IRIX 3.3.1, the NFS is "the latest" so far as I know.

I was not able to find a solution in the documentation, and the 
machine has no support contract at this time, so I am somewhat 
at a loss. Am I missing something blatent here, or is there a 
real problem?

Any and all help or suggestions would be greatly appreciated.

Thanks in advanve

Steve