ISC DHCP Server particular subnet for MAC address vendor

class "plc" {
   # Devices with hardware vendor "00:13:c1" belong to the "plc" class.
   match if binary-to-ascii(16,8,":",substring(hardware, 1, 3)) = "00:13:c1";
}

subnet 172.16.0.0 netmask 255.255.255.0 {
    # PLC devices will use IP addresses 172.16.0.49-55.
    pool {
        allow members of "plc";
        range 172.16.0.49 172.16.0.55;
    }

    # All other devices will use IP addresses 172.16.0.193-254
    pool {
        deny members of "plc";
        range 172.16.0.193 172.16.0.254;
    }
}