Support for handling DNS negotiation was a feature added in Apple Remote Access 3.1, which shipped with Mac OS 8.5. If you are using the version of Remote Access bundled with 8.5 or later, you will not see the numbers displayed in the TCP/IP control panel, but they will be honored and used for DNS lookups. If the servers obtained automatically fail to respond, the addresses entered into the TCP/IP control panel will be used next.
If you are using a version of Remote Access client earlier than version 3.1, you must manually enter any DNS server addresses that you want to use. Your ISP or network administrator can supply you with this information.
Note that the most current version of ARA Personal Server as of July 1999 is 3.0.2. If you have installed the Apple Remote Access Personal Server on your computer, you must manually enter valid DNS addresses, and this feature is not supported.