/tmp/ über NFSv4 freigeben:

mkdir -p /srv/exports/freigabe
exportfs -o ro,fsid=0 192.168.243.0/24:/srv/exports
mount --bind /tmp /srv/exports/freigabe
exportfs -o ro 192.168.243.0/24:/srv/exports/freigabe
showmount -e 192.168.243.12
mkdir /mnt/test
mount -t nfs -o nfsvers=4 192.168.243.12:/freigabe /mnt/test