dhcpd.conf

sh# vi /etc/dhcp/dhcpd.conf

option domain-name "home";

option domain-name-server 208.67.222.222, 208.67.220.220;

default-lease-time  600;

max-lease-time     7200;

ddns-update-style  none;

authoritative;

subnet 192.168.72.0 netmask 255.255.255.0 {

  range 192.168.72.23 192.168.72.34;

  option routers myrouter72;

  option broadcast-address 192.168.72.255;

}

subnet 192.168.45.0 netmask 255.255.255.0 {

  range 192.168.45.34 192.168.45.52;

  option routers myrouter45

host myrouter72 {

  hardware ethernet 00:00:00:cc:bb:aa;

  fixed-address 192.168.72.1;

}

host myrouter45 {

  hardware ethernet 00:00:00:ff:ee:dd;

  fixed-address 192.168.45.1;

}

sh# vi /etc/default/isc-dhcp-server

...

INTERFACESv4="eth72 eth45"

Starting / Stopping

sh# systemctl enable isc-dhcp-server

sh# systemctl start  isc-dhcp-server