Make sure the v4 version is set when only a minor
version is set in /etc/nfs.conf

Set v4 version if only minor version are specified

When vers4 in /etc/nfs.conf is set to 'n', all minor
version are disabled as well. But when vers4 is set
'y' all minor version are settable. Meaning 

vers4=n
vers4.2=y 
does not work. rpc.nfsd complains there are no
version set. 

vers4=y
vers4=y
does work.

Now the rpc.nfsd(8) man page does say 
   vers4  Enable or disable a major NFS version.
   
It could be changed to 
    vers4  Enable or disable all major NFS versions.
    
Or the two line patch attached could be applied.

Steve Dickson (1):
  nfsd: Set v4 version when only a minor version is set

 utils/nfsd/nfsd.c | 3 +++
 1 file changed, 3 insertions(+)

-- 
2.37.3