Provide NFSv4 client support (EXPERIMENTAL)

modulename: nfsv4.ko

configname: CONFIG_NFS_V4

Linux Kernel Configuration
└─>File systems
└─>Network File Systems
└─>Provide NFSv4 client support (EXPERIMENTAL)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Say Y here if you want your NFS client to be able to speak the newer
version 4 of the NFS protocol.

Note: Requires auxiliary userspace daemons which may be found on
http://www.citi.umich.edu/projects/nfsv4/

If unsure, say N.