Which config file do I need to edit to disable getting hostname from DHCP server?

Arodef · 03-18-2011, 07:40 PM

I need to disable the system from assigning its hostname when it gets its IP assignment from the DHCP server (aka my router). Which configuration file do I need to edit to disable that? I need the system to stick with its default hostname assignment (localhost.localdomain). I checked the usual suspects for networking but I didn't see anything that would indicate to get the hostname from the dhcp server. Thanks for any help!

eSelix · 03-18-2011, 07:50 PM

In Ubuntu there is a file "/etc/dhcp3/dhclient.conf" and there is:

Code:

request subnet-mask, broadcast-address, time-offset, routers,
    domain-name, domain-name-servers, domain-search, host-name,
    netbios-name-servers, netbios-scope, interface-mtu,
    rfc3442-classless-static-routes, ntp-servers;

Remove "host-name" from the list. It is nice solution, but server can be configured to force transmiting hostname, then remove the file "/etc/dhcp3/dhclient-exit-hooks.d/hostname".

Arodef · 03-18-2011, 07:56 PM

Thanks for the quick reply, I'm using RHEL/CentOS and it doesn't look like there's a matching file for that.

michaelk · 03-18-2011, 08:42 PM

Look for a /etc/dhclient-eth0.conf file.