When we setup Microsoft DHCP and DNS servers we found that when client machines obtained new DHCP IP addresses on the local subnet the relevant A and PTR records were not added to the DNS server. This manifested itself when client machines could not be pinged.
Apparently the DNS records are not updated unless a client machine requests it – which does not happen when a new address is obtained.
To change this behaviour:
To configure a DHCP server to register and to update client information with its configured DNS servers, follow these steps:
- Open the DHCP properties for the server
- Click DNS, click Properties, click to select the Enable DNS dynamic updates according to the settings below check box, and then click Always dynamically update DNS A and PTR records.