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;
}

Avec un tail -f /var/log/syslog on peut voir l'activité du serveur DHCP, voici un exemple :

/var/log/syslog

Nov  4 16:52:46 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.161 from 28:3f:69:cc:8c:12 via enp3s8: unknown lease 192.168.1.161.
Nov  4 16:52:50 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.
Nov  4 16:52:57 binovix-srv dhcpd[30321]: message repeated 2 times: [ DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.]
Nov  4 16:53:01 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.161 from 28:3f:69:cc:8c:12 via enp3s8: unknown lease 192.168.1.161.
Nov  4 16:53:05 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.
Nov  4 16:53:36 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.161 from 28:3f:69:cc:8c:12 via enp3s8: unknown lease 192.168.1.161.
Nov  4 16:53:44 binovix-srv dhcpd[30321]: DHCPDISCOVER from 28:3f:69:cc:8c:12 via enp3s8
Nov  4 16:53:44 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.
Nov  4 16:53:45 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.91 to 28:3f:69:cc:8c:12 via enp3s8
Nov  4 16:53:45 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.91 (192.168.1.105) from 28:3f:69:cc:8c:12 via enp3s8
Nov  4 16:53:45 binovix-srv dhcpd[30321]: DHCPACK on 192.168.1.91 to 28:3f:69:cc:8c:12 via enp3s8
Nov  4 16:53:47 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.
Nov  4 16:53:48 binovix-srv dhcpd[30321]: message repeated 277 times: [ DHCPREQUEST for 192.168.1.156 from 40:b8:9a:e9:66:23 via enp3s8: unknown lease 192.168.1.156.]
Nov  4 16:53:51 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.179 from f4:f5:d8:ed:f3:e2 via enp3s8: unknown lease 192.168.1.179.
Nov  4 16:53:55 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.179 from f4:f5:d8:ed:f3:e2 via enp3s8: unknown lease 192.168.1.179.
Nov  4 16:54:01 binovix-srv dhcpd[30321]: DHCPDISCOVER from f4:f5:d8:ed:f3:e2 via enp3s8
Nov  4 16:54:02 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.92 to f4:f5:d8:ed:f3:e2 (Chromecast) via enp3s8
Nov  4 16:54:02 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.92 (192.168.1.105) from f4:f5:d8:ed:f3:e2 (Chromecast) via enp3s8
Nov  4 16:54:02 binovix-srv dhcpd[30321]: DHCPACK on 192.168.1.92 to f4:f5:d8:ed:f3:e2 (Chromecast) via enp3s8
Nov  4 16:54:04 binovix-srv dhcpd[30321]: DHCPDISCOVER from 40:b8:9a:e9:66:23 via enp3s8
Nov  4 16:54:05 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.93 to 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:09 binovix-srv dhcpd[30321]: DHCPDISCOVER from 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:09 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.93 to 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:14 binovix-srv dhcpd[30321]: DHCPDISCOVER from 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:14 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.93 to 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:23 binovix-srv dhcpd[30321]: DHCPDISCOVER from 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:23 binovix-srv dhcpd[30321]: DHCPOFFER on 192.168.1.93 to 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:23 binovix-srv dhcpd[30321]: DHCPREQUEST for 192.168.1.93 (192.168.1.105) from 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8
Nov  4 16:54:23 binovix-srv dhcpd[30321]: DHCPACK on 192.168.1.93 to 40:b8:9a:e9:66:23 (DESKTOP-2873I17) via enp3s8

• https://doc.ubuntu-fr.org/isc-dhcp-server