Note: If this file does not exist, you must create it.

Where xxx.xxx.xxx.xxx is the IP address of a DNS server that you want the instance to use. Because this file is read-only, you must switch to a user account with sufficient privileges to make changes to the file before attempting to edit the file. This can typically be accomplished by preceding the command with sudo and providing the appropriate password to temporarily gain root privileges. As a result of this modification, the resolv.conf file will be updated to contain only the DNS servers that you specified when the instance is rebooted.

You can also use the supersede statement to override any options specified in the dhclient.conf file with a locally configured value.  For example, if you wanted to replace the domain search and domain name values returned by dhcp, you could add the following lines to the bottom of dhclient.conf: