#!/bin/bash

cat > /etc/dhcp/dhcpd.conf <<EOL
subnet 10.67.2.0 netmask 255.255.255.0 {
    range 10.67.2.64 10.67.2.65;
    range 10.67.2.100 10.67.2.101;
    option routers 10.67.2.1;
    option broadcast-address 10.67.2.255;
    option domain-name-servers 10.67.3.3;
    default-lease-time 300;
    max-lease-time 6000;
}

subnet 10.67.5.0 netmask 255.255.255.0 {
    range 10.67.5.50 10.67.5.51;
    range 10.67.5.155 10.67.5.156;
    option routers 10.67.5.1;
    option broadcast-address 10.67.5.255;
    option domain-name-servers 10.67.3.3;
    default-lease-time 1200;
    max-lease-time 6000;
}

subnet 10.67.3.0 netmask 255.255.255.0 {}

subnet 10.67.1.0 netmask 255.255.255.0 {
    range 10.67.1.10 10.67.1.15;
    range 10.67.1.20 10.67.1.25;
    option routers 10.67.1.1;
    option broadcast-address 10.67.1.255;
    option domain-name-servers 10.67.3.3;
    default-lease-time 600;
    max-lease-time 6000;
}

subnet 10.67.6.0 netmask 255.255.255.0 {
    range 10.67.6.10 10.67.6.15;
    range 10.67.6.20 10.67.6.25;
    option routers 10.67.6.1;
    option broadcast-address 10.67.6.255;
    option domain-name-servers 10.67.3.3;
    default-lease-time 600;
    max-lease-time 6000;
}

host HermioneGranger {
    hardware ethernet aa:bb:cc:01:01:01;
    fixed-address 10.67.1.14;
}

host ChoChang {
    hardware ethernet aa:bb:cc:06:06:06;
    fixed-address 10.67.6.14;
}
EOL

service isc-dhcp-server restart