Running an undelegated zone

For testing purposes, I want to run a zone that is not delegated to me
(Actually an in-addr.arpa zone).

I have it working on BIND 9, but doing what seems like the equivalent thing
on BIND 8 does not work.

A caveat is the BIND 9 system is not connected to the Internet, so it's
cache is basically empty.

The BIND 8 system is connected and is the Primary for my domains.