pdns-slave/conf/hosts.json.default

[
{
  "action": "defaults",
  "domain": "example.com",
  "reverse_domain": "1.168.192.in-addr.arpa",
  "reverse_enabled": true,
  "record_type": "A"
},
{
  "action": "add_domain",
  "domain": "1.168.192.in-addr.arpa"
},
{
  "action": "del_domain",
  "domain": "2.168.192.in-addr.arpa"
},
{
  "action": "add_host",
  "host": "my-host",
  "record_value": "192.168.1.2",
  "dhcp_mac": "aa:bb:cc:dd:ee:ff"
},
{
  "action"; "del_host",
  "host": "my-host"
}
]