After running "make update" in net/bind9, I see this:

bind-9.4.1nb1       Version 9 of the Berkeley Internet Name Daemon, implementation of DNS
bind-9.4.1-P1       Version 9 of the Berkeley Internet Name Daemon, implementation of DNS

One's not replacing the other...

John Klos
-- 
The good Christian should beware of mathematicians and all those who
make empty prophecies.  The danger already exists that mathematicians
have made a covenant with the devil to darken the spirit and confine
man in the bonds of Hell.
 		-- St. Augustine