To reproduce, simply create and share a dir in the server's
root directory. The dir's name must start with a leading
dot '.'.
on the server:
# mkdir /.whatever
# share -F nfs /.whatever
on the client:
# mount server:/.whatever /mnt
The mount will fail saying that /.whatever doesn't exist. This
bug has existed since NFS4 first arrived in s10_36.
Work Around
To workaround this problem, either
1. remove the leading '.' from the shared dir on the server
2. move the shared dir on the server out of the server's root
directory