HOWTO: Setup a DHCP Server on Ubuntu 9.10

Setting up a DHCP server on a LAN with Ubuntu 9.10. These instructions should also basically work on Ubuntu 10.x.

# File:	HOWTO Configure a DHCP Server on Ubuntu.notes
# Date:	2010/03/24
# Refs: https://help.ubuntu.com/community/dhcp3-server
#       http://www.ubuntugeek.com/how-to-install-and-configure-dhcp-server-in-ubuntu-server.html
# Desc:	Setting up a DHCP server on a LAN with Ubuntu 9.10

# Install DHCP3
sudo apt-get install dhcp3-server

# Specify the interface(s) that dhcp3-server should manage
# in /etc/default/dhcp3-server
INTERFACES="eth0"

# Set a static IP for the DHCP server itself on the
# interfaces that it will manage in /etc/network/interfaces
auth eth0
iface eth0 inet static
    address 192.168.72.1
    netmask 255.255.255.0
    network 192.168.72.0
    gateway 192.168.72.254
    broadcast 192.168.72.255

# Edit the etc/dhcp3/dhcpd.conf configuration file
# I'm going to be running a 192.168.72.0 host-only 
# vmnet on eth0 with fixed addresses for several machines 
# in my example here
ddns-update-style none;
log-facility local7;
authoritative;

subnet 192.168.72.0 netmask 255.255.255.0 {

    option routers              192.168.72.254;
    option subnet-mask          255.255.255.0;
    option broadcast-address    192.168.72.255;
    option domain-name-servers  192.168.72.1;
    option ntp-servers          192.168.72.1;
    default-lease-time          7200;
    max-lease-time              86400;

    host helium {
            hardware ethernet 00:0c:29:c6:de:09;
            fixed-address 192.168.72.2;
    }
    host lithium {
            hardware ethernet 00:0c:29:d8:d5:7f;
            fixed-address 192.168.72.3;
    }
    host beryllium {
            hardware ethernet 00:0c:29:b6:93:41;
            fixed-address 192.168.72.4;
    }
    host boron {
            hardware ethernet 00:0c:29:3f:c6:f3;
            fixed-address 192.168.72.5;
    }
}