user space nfs vs. kernel nfs

Hi,

does the kernel nfs server support any method of user id mapping? I need to
export a certain directory from a cluster node to a individual linux box ouside
of the cluster with full rw access. Unfortunately the UIDs of the same user
differ on both systems.

I know, that the user space nfs server has such a ability via NIS based user
mapping like this:

/fs/user host.foo.org(rw,map_nis=domainname)

in /etc/exports.But of course this works not with the kernel nfs server.

So what can I do to with the kernel nfs to map the UID?

Thanks for your comments

Regards,
Mischa