1.- apt-get install dhcp3-server

2.- Activamos la interface:

vi  /etc/default/dhcp3-server

Y añadimos la interface que desemos en:

INTERFACES=”eth0″

4.- Configuramos DHCP:

vi /etc/dhcp3/dhcpd.conf

option domain-name-servers 192.168.3.1;

default-lease-time 86400;
max-lease-time 604800;

authoritative;

subnet 192.168.3.0 netmask 255.255.255.0 {
        range 192.168.3.100 192.168.0.245;
        option subnet-mask 255.255.255.0;
        option broadcast-address 192.168.3.255;
        option routers 192.168.3.1;
}