pfSense version of TinyDNS which features failover host support
This info valid as of v1.2.2
The TinyDNS records in /etc/tinydns/root/data (and the actual live database file that goes with it), are all generated on the fly from /conf/config.xml This means once you understand the config.xml section for TinyDNS, you can do a bulk-load of records by creating the correct XML code somewhere else and then pasting it in directly. (You do have to restart the firewall for the changes to be picked up though).