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Added note about permanent changes to DNS server.
{{Admon/important| This final step is important. | Failure to complete this will cause problems with future labs.}}
*Finally, configure each machine to use a static IP address and hostname that matches what the DNS server now claims it uses. Double check that this address, and the ability to search using your DNS server, persist after reboot.
*Add the entry to your interface configuration file that will cause it to permanently use your host as its primary DNS server.
*If you have made any changes to the /etc/hosts file, undo them. Your machines must be relying on your DNS server.
*Ensure that your machines can ping and SSH to each other by IP address and by name (hostname only, and hostname with domain).
