|{{Admon/note|VM Backups and Yum Updates|Before proceeding with this lab make certain that you have backed-up from lab7, and then perform a '''yum update''' on all machines (including your VMs)|}}
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# It is advisable to perform a '''yum update''' on your host and all three of your VM's.# Perform this section in your '''centos3''' VM.# It is also advisable that you properly backed up your VMs from lab7.<br><br>The version of DHCP server that comes with CentOS is maintained and distributed by the Internet Software Consortium (http://www.isc.org). The source package that you can download from ISC includes not only the DHCP server, but also a DHCP client and a DHCP relay agent. CentOS separates it into two RPM packages: the DHCP client package and the DHCP server package. The DHCP client package is installed by default by the workstation installation.<br><br>
# To check that you have <code>dhclient</code> installed, enter the command:
#:: <b><code><span style="color:#3366CC;font-size:1.2em;">rpm -q dhclient</span></code></b>