Fedora Users — Re: how to keep search suffix in /etc/resolv.conf

Jingcao Hu wrote:

Thanks Frank, Mattew and Mike. Unfortunately, I use the DHCP server which is provided by my ISP, so I don't have access to it. Meanwhile, I don't want to use my school's DNS server though, since using ISP's DNS server seems a little bit faster. Maybe I will just go ahead and put some code in my rc.local.
Frank Solensky <frank@xxxxxxxxxxxx> writes:
Every time, when the system reboot, the dhcp client overwrite it. I am fine with the given DNS server, but I would like to keep my search suffix. More specifically, I want to have the "search a.b.c" to the domain that I want.
If you're picking up the DNS server locations from your DHCP server, it
might be easier to get it to announce the domain name along with the
server addresses.
If the server is another Linux system, the dhcpd.conf file should
include the line
   option domain-name "cmu.edu";
usually as a global configuration option.  The man page for dhcpd.conf
has more details.

Edit /etc/sysconfig/network-scripts/ifcfg-ethX (where X is the interface which is using DHCP)

Add the line:

PEERDNS=no

Restart your network and then edit your /etc/resolv.conf to say what you want. It will no longer be overwritten by dhclient updates.

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