can one run an *exclusively* NFSv4 network?

[Todd A. Jacobs]

On Mon, Apr 18, 2011 at 2:21 PM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
>
>  i know i've asked this before but i've never had a really confident
> answer.  at least on ubuntu, is it possible to set up an NFS network
> that uses solely and exclusively version 4, with no support whatsoever
> for earlier versions?

Do you mean excluding nfsv3 clients, or what? I'm not really sure what
you're trying to accomplish here.