9. Migrating to BIND 9

The BIND 9 distribution, and the prepackaged versions too, contains a document called migration that contains notes about how to migrate from BIND 8 to BIND 9. The document is very straight forward. If you installed binary packages it's likely stored in /usr/share/doc/bind* or /usr/doc/bind* somewhere.

If you're running BIND 4, you may find a document called migration-4to9 in the same place.