1)
http://www.redhat.com/support/docs/rhl/RHL-5.2-Manual/install-guide/manual/doc062.html
Sec. 8.1.4.6 says "You cannot use these [private] IP
addresses if you
connect to the Internet." This is strictly-speaking untrue
and will
confuse many who will be connecting their computer to the
Internet while
not connecting their local network to the Internet. Please
clarify.

2)
http://www.redhat.com/support/docs/rhl/RHL-5.2-Manual/install-guide/manual/doc062.html
Says 192.168.0.0 - 192.168.255.255 are private address.
Rumour has it
that 192.168.0.* and 192.168.255.* are not reliably
considered private
by some network SW. You might want to pass on the rumour
(and note it as
such) or not.