Resolver Configuration Screen Nameservers are ranked according to the order in which they are accessed. It is not unusual to see nameservers referred to as primary, secondary, tertiary and so on down the list if more than one is specified. Each of these must be an IP address and not a name, since the computer has no way to resolve the name until it connects to a nameserver. In addition to a default domain, you can also specify up to six search domains. Search domains are useful if you want to specify many hostnames with the same domain but do not want to type the domain name.
Search domains take precedence over the default domain.
Information about other hosts . To modify or delete an entry select it. To modify it, change the information as necessary. The primary name is the name of the computer, while the domain is how the network is specified. For example, 192.168.0.13.