If the downloaded provisioning file includes a DNS IP in the DNS section of the file, the URLs of the files in the provisioning file must be resolved using this DNS server or by the DNS server listed in the DHCP offer.
Up to three DNS addresses (primary, secondary, tertiary) can be listed in the DNS section of the provisioning file. If all three DNS addresses are listed, they are attempted in the order they are listed, to resolve the file URLs.