Debian 11 Bullseye
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DHCP : Configure DHCP Server
2021/08/18
 
Configure DHCP ( Dynamic Host Configuration Protocol ) Server to assign IP addresses to client hosts in local network.
[1] Install and Configure DHCP. On this example, it shows only for IPv4 configuration.
root@dlp:~#
apt -y install isc-dhcp-server
root@dlp:~#
vi /etc/default/isc-dhcp-server
# line 4 : uncomment

DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
# 1line 17,18 : specify interface to listen (replace it to your environment)

INTERFACESv4="
enp1s0
"
root@dlp:~#
vi /etc/dhcp/dhcpd.conf
# line 7 : specify domain name

option domain-name
"srv.world"
;
# line 8 : specify nameserver's hostname or IP address

option domain-name-servers
dlp.srv.world
;
# line 21 : uncomment (this DHCP server to be declared valid)

authoritative;
# specify network address and subnetmask

# specify the range of lease IP address

subnet 10.0.0.0 netmask 255.255.255.0 {
    # specify gateway
    option routers 10.0.0.1;
    # specify subnet mask
    option subnet-mask 255.255.255.0;
    # specify the range of lease IP address
    range dynamic-bootp 10.0.0.200 10.0.0.254;
}

root@dlp:~#
systemctl restart isc-dhcp-server

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