lfce/dhcp.txt at master · ghumman/lfce · GitHub

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Install
sudo apt-get install isc-dhcp-server

Assign static ip address(/etc/network/interfaces)
auto enp0s31f6
iface enp0s31f6 inet static
        address 10.5.5.1
        netmask 255.255.255.0


Declare which interface to use for dhcp server
sudo vim /etc/default/isc-dhcp-server
INTERFACES="enp0s31f6"


Add following to /etc/dhcp/dhcp.conf
ddns-update-style none;
option domain-name "example.org";
option domain-name-servers ns1.example.org, ns2.example.org;
default-lease-time 600;
max-lease-time 7200;
authoritative;
log-facility local7;
# A slightly different configuration for an internal subnet.
subnet 10.5.5.0 netmask 255.255.255.224 {
  range 10.5.5.26 10.5.5.30;
  option domain-name-servers ns1.internal.example.org;
  option domain-name "internal.example.org";
  option subnet-mask 255.255.255.224;
  option routers 10.5.5.1;
  option broadcast-address 10.5.5.31;
  default-lease-time 600;
  max-lease-time 7200;
}
host desktop-node {
         hardware ethernet a0:8c:fd:d6:bd:0f ;
         fixed-address 10.5.5.30;
 }

dhcp leases can be found in following file
/var/lib/dhcp/dhcpd.leases