root@LTSP:/home/administrator# dpkg -la | grep nfs
ii  libnfsidmap2                                                0.25-1ubuntu2                                       NFS idmapping library
ii  nfs-common                                                  1:1.2.5-3ubuntu3.2                                  NFS support files common to client and server
ii  nfs-kernel-server                                           1:1.2.5-3ubuntu3.2                                  support for NFS kernel server