Setting up a DNS forwarder
In network environments where primary or secondary DNS servers are installed, create a forwarder to the new DNS server. The new DNS server must be where the resource records for AirPrint advertisement and services discovery are maintained. The forwarder lets AirPrint devices locate the LPM server without adding the records required for AirPrint advertisement to the existing DNS servers. It is not necessary to update the IP address of the primary and secondary DNS servers on the client devices or computers.
Note: Setting up a DNS forwarder is not necessary when adding the resource records to a parent DNS server. It is also not necessary when the new server installation is the only network DNS server. For more information on your environment, contact your system administrator.