Re-Exporting NFS mounts under RHEL ES 3

I have a scenario where I have three linux hosts. Host A is on a
production network. Host B has two NICs, one on the production network
and one on a private network. Host C is on the private network. Host
A is sharing data via NFS, we'll call it /export. I want host B to be
able to mount /export from host A to its own /export and then re-export
via NFS on the private network that very same /export to host C.

Out of the box NFS in RHEL3 doesnt seem to allow this. Attempts to
mount a re-exported directory on host C from host B results in a
"rpc.mountd: getfh failed: Operation not permitted" error. Now I know
in SuSE there is an option in /etc/rc.config called
REEXPORT_NFS="yes", but I can find no such analog for RHEL 3 in
anything in /etc/sysconfig. On some versions of NFS, its possible to
give rpc.mount and rpc.nfsd the "--re-rxport" option, but these appear
to be invalid for RHEL 3's NFS as well.

How can I enable re-exporting of NFS mounted directories in RHEL 3? Is
this going to require some kind of kernel tweak or compiling a
different version of NFS?

Thanks,
Robert

.

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