Occasionally, I’ll build a prototype server just to kick the tires of some new system or application. When I do that, I know that it’s a temporary set up and don’t want to spend time setting up a static IP address and registering it. Fortunately, there’s a way to dynamically register a name with the DHCP server. See the ‘dhclient’ man page for more details but the short of it is:
Make sure the interface is down first: [root@localhost]# ifconfig eth0 down then type [root@localhost]# dhclient -F mycomputer.domain.org where mycomputer.domain.org is your FQDN Now try [root@localhost]# nslookup >mycomputer.domain.org Server: 220.127.116.11 Address: 18.104.22.168 Name: mycomputer.domain.org Address: 192.168.1.1 Voila!