ISC DHCP Server

 sudo apt install isc-dhcp-server

/etc/dhcp/dhcpd.conf

thierry@binovix-srv:~$ sudo cat /etc/dhcp/dhcpd.conf
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
# Attention: If /etc/ltsp/dhcpd.conf exists, that will be used as
# configuration file instead of this file.
#
 
# option definitions common to all supported networks...
option domain-name "binovix.lan";
option domain-name-servers 192.168.1.105;
option routers 192.168.1.1
option subnet-mask 255.255.255.0
 
default-lease-time 600;
max-lease-time 7200;
 
subnet 192.168.1.0 netmask 255.255.255.0 {
  range 192.168.1.90 192.168.1.100;
}