...______ ______ _____  _____ ____ _  __ __ _ 
../ ____// __  // __ / / ___//_  /\ \/ // ///.
./____ // /_/ // __ < / /__   / /_ \  //   /..
/_____//_____//_____//____/  /___/ /_//_/\_\...

1. Przypisanie DHCP do portu eth0. Edycja pliku /etc/default/isc-dhcp-server

INTERFACESv4="eth0"
INTERFACESv6=""

2. Plik konfiguracyjny DHCP /etc/dhcp/dhcpd.conf.

subnet 192.168.12.0 netmask 255.255.255.0 {
range 192.168.12.101 192.168.12.200;
option domain-name-servers 8.8.8.8, 8.8.4.4;
option domain-name "local";
option routers 192.168.12.1;
option broadcast-address 192.168.12.255;
default-lease-time 600;
max-lease-time 7200;
}