====== PFSense - Network - Automatic Hostnames ====== Navigate to **Services -> DNS Resolver -> General Settings**. In **General DNS Resolver Options**: * DHCP Registration - Register DHCP leases in the DNS Resolver: **Checked**. **NOTE:** This will cause the Resolver to reload and flush its resolution cache whenever a DHCP lease is issued. * This could put a high load on the DNS server, which should be fine for small setups. * Static DHCP - Register DHCP static mappings: **Checked**. **NOTE:** This is to ensure that statically mapped DHCP clients are registered. * This will not break pfBlockerNG - Unbound Python Mode.