The <replaceable><192.168.0.2></replaceable> and <replaceable><FQDN></replaceable> values need to be changed for specific uses or requirements (if assigned an IP address by a network/system administrator and the machine will be connected to an existing network). The optional alias name(s) can be omitted, and the <replaceable><192.168.0.2></replaceable> line can be omitted if you are using a connection configured with DHCP or IPv6 Autoconfiguration, or using <literal>localhost.localdomain</literal> as the FQDN.