DHCP client

Берём от DHCP сервера только часть параметров

# cat /etc/dhclient.conf
	timeout 60;
	reboot 10;
	retry 60;
	select-timeout 5;
	initial-interval 2;
	script "/var/dhclient-script";

	interface "wan" {
	  request subnet-mask, routers, domain-name, domain-name-servers;
	}

	interface "lan1" {
	  request subnet-mask, routers, domain-name, domain-name-servers;
	}