DHCP default and max lease time

At this point we can add feww aditional settings to our DHCP configuration, namely the default and max lease time expiry.

• default-lease-time is a value in seconds in which a leased IP address expiry will be set to if DHCP client does not ask for any other specific expiry lease time
• max-lease-time is a value in seconds which defines a maximum expiry time for an IP address leased by DHCP server

default-lease-time 600;
max-lease-time 7200;

subnet 10.1.1.0 netmask 255.255.255.0 {
  range 10.1.1.3 10.1.1.254;
}

subnet 192.168.0.0 netmask 255.255.0.0 {
}