Was wondering if you like to use Git modules to point to https://github.com/egberts/bind9_parser to your example?

otherwise, i would be happy to submit ipAddress, ip4Address, ip6Address as well as fqdn, fqdn_enddot_opt, fqdn_enddot, and a few others using from the large set of EBNFs found in ISC Bind9 named.conf configuration file