Its a honeypot Chris.... if the goal is to deny intel, don't
spraypaint it a neon green. Camo is much nicer... if that is the
tactic you wish to take.
NMAP-like tools will identify your server version to anyone who wants to know.
So you may as well just speak the truth in your VERSION.BIND answers, so that
your own people won't have to use NMAP-like tools for internal auditing.