Note also, that although NFSv4 uses strings for uid/gid/domain, the underlying RPC layer uses the same authentication credentials as in previous NFS versions and other RPC programs.
Since it's the RPC authentication that is used to control access, etc, don't expect too much from the NFSv4 name/id mapping. It's useful for ls -l listings, etc, but not for authentication. cheers, calum.
