source: connect/dhcp/dhcp-client.xml@ 01600b9

<sect1 id="connect-dhcp-client">
<?dbhtml filename="dhcpclient.html" dir="connect"?>
<title>dhcp-&dhcp-version;</title>

<para>The dhcp package comes with both a client (called dhclient) and a 
server program for using DHCP.  If you want to install this package, 
the instructions can be found at <xref linkend="dhcp"/>.  
Note that if you only want to use the client, you 
do <emphasis>not</emphasis> need to run the server and so do not need 
the startup script and links provided for the server daemon.
You only need to run the DHCP server if you're providing this
service to a network, and it's likely that you'll know if that's the
case; if it isn't, don't run the server!  Once you have installed the
package, return here for information on how to configure the client
(dhclient).</para>

<para>To configure dhclient, you need to create two files,
<filename>/etc/sysconfig/network-devices/ifconfig.eth0</filename> and
<filename>/etc/dhclient.conf</filename>.</para>

<para>First, create the <filename>ifconfig.eth0</filename>
file with the following commands (note that this will overwrite any
existing file):</para>

<para><screen><userinput>cd /etc/sysconfig/network-devices &amp;&amp;
cat &gt; /etc/sysconfig/network-devices/ifconfig.eth0 &lt;&lt; "EOF"</userinput>
ONBOOT=yes
DHCP_PROG=/sbin/dhclient
DHCP_START=&lt;appropriate start parameters&gt;
DHCP_STOP=-r
<userinput>EOF</userinput></screen></para>

<para>For more information on the appropriate 
<userinput>DHCP_START</userinput> and <userinput>DHCP_STOP</userinput> 
values, examine the man page for dhclient.</para>

<para>Next, you should then create 
the <filename>/etc/dhclient.conf</filename> using the following command:</para>

<para><screen><userinput>cat &gt; /etc/dhclient.conf &lt;&lt; "EOF"</userinput>
# dhclient.conf

interface "eth0"{
prepend domain-name-servers 127.0.0.1;
request subnet-mask, broadcast-address, time-offset, routers,
        domain-name, domain-name-servers, host-name;
require subnet-mask, domain-name-servers;
}
# end dhclient.conf
<userinput>EOF</userinput></screen></para>

</sect1>