NFS issues -- FC2 current to MP-RAS (NCR Unix)

[Phil Meyer]

I apologize for a repeat question, but I did not do due diligence last time.

The network install process of MP-RAS uses NFS.  However, it seems to be 
an older version than when the system is actually up and running.  I 
believe what I am seeing is NFS version 2 during the install process, 
and version 3 when fully up.

I have no difficulty mounting from FC2->MP-RAS except during a network 
install.
My observations may be incorrect, but...
    During network install they use NFS version 2 and try to 
authenticate with a user: NCR_NETINSTALL

NFS version 2 would normally require root, or none.  There is a blurb in 
their man pages for network based installs that says you need to use the 
-n option to mountd to be able to do this successfully.  Well the -n 
option for old SYSV systems is:

     With the -n option, mountd does not check that  the  clients
     are  root  users.   Though this option makes things slightly
     less secure, it  does  allow  older  versions  (pre-3.0)  of
     client NFS to work.

No equivalent option is apparent to me from the FC2 mountd man pages.

So the obvious questions are:
Why does HPUX nfs work?
Why does FC2 nfs NOT work?
Is there a way to make FC2 work?

I have some small packet captures if anyone would like me to email them 
to you.  I have FC2 failing on two attempts (8 packets, 4 of which are 
summarized below) and a successful mount to HPUX 11i (37 packets).

Here are the packets dumped during the attempt to mount from FC2, and 
you can see that packet 4 is a denial.

  1   0.000000  10.7.24.220 -> 10.7.23.106  Portmap V2 GETPORT Call
 
0000  00 0d 56 7d c7 1a 00 04 dd 8f fb 82 08 00 45 00   ..V}..........E.
0010  00 7c 00 01 00 00 04 11 72 1d 0a 07 18 dc 0a 07   .|......r.......
0020  17 6a 10 00 00 6f 00 68 72 07 40 ea b7 bb 00 00   .j...o.hr. at .....
0030  00 00 00 00 00 02 00 01 86 a0 00 00 00 02 00 00   ................
0040  00 03 00 00 00 01 00 00 00 28 00 00 00 01 00 00   .........(......
0050  00 0e 4e 43 52 5f 4e 45 54 49 4e 53 54 41 4c 4c   ..NCR_NETINSTALL
0060  00 00 00 00 00 00 00 00 00 01 00 00 00 01 00 00   ................
0070  00 01 00 00 00 00 00 00 00 00 00 01 86 a5 00 00   ................
0080  00 01 00 00 00 11 00 00 00 00                     ..........
 
  2   0.000385  10.7.23.106 -> 10.7.24.220  Portmap V2 GETPORT Reply 
(Call In 1)
0000  00 00 0c 07 ac 2a 00 0d 56 7d c7 1a 08 00 45 00   .....*..V}....E.
0010  00 38 00 2b 40 00 40 11 f6 36 0a 07 17 6a 0a 07   .8.+ at .@..6...j..
0020  18 dc 00 6f 10 00 00 24 44 89 40 ea b7 bb 00 00   ...o...$D. at .....
0030  00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0040  00 00 00 00 03 b4                                 ......
 
  3   0.000910  10.7.24.220 -> 10.7.23.106  MOUNT V1 MNT Call
 
0000  00 0d 56 7d c7 1a 00 04 dd 84 65 42 08 00 45 00   ..V}......eB..E.
0010  00 80 00 02 00 00 04 11 72 18 0a 07 18 dc 0a 07   ........r.......
0020  17 6a 10 01 03 b4 00 6c 17 18 40 ea b7 bc 00 00   .j.....l.. at .....
0030  00 00 00 00 00 02 00 01 86 a5 00 00 00 01 00 00   ................
0040  00 01 00 00 00 01 00 00 00 28 00 00 00 01 00 00   .........(......
0050  00 0e 4e 43 52 5f 4e 45 54 49 4e 53 54 41 4c 4c   ..NCR_NETINSTALL
0060  00 00 00 00 00 00 00 00 00 01 00 00 00 01 00 00   ................
0070  00 01 00 00 00 00 00 00 00 00 00 00 00 0d 2f 65   ............../e
0080  78 70 6f 72 74 2f 6d 70 72 61 73 00 00 00         xport/mpras...
 
  4   0.001496  10.7.23.106 -> 10.7.24.220  MOUNT V1 MNT Reply (Call In 3)
 
0000  00 00 0c 07 ac 2a 00 0d 56 7d c7 1a 08 00 45 00   .....*..V}....E.
0010  00 38 00 03 40 00 40 11 f6 5e 0a 07 17 6a 0a 07   .8.. at .@..^...j..
0020  18 dc 03 b4 10 01 00 24 44 89 40 ea b7 bc 00 00   .......$D. at .....
0030  00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0040  00 00 00 00 00 0d                                 ......