My goal is to detect when the Ethernet cable gets disconnected I am attempting to use NetworkChange class but the event NetworkAvailibilityChanged does not trigger when I unplug Ethernet cable. NetworkAddressChanged does get triggered in about 8 seconds but NetworkAvailibilityChanged never does, is there is anything am I am missing?

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            NetworkChange.NetworkAvailabilityChanged += new NetworkAvailabilityChangedEventHandler(NetworkChange_NetworkAvailabilityChanged);
            NetworkChange.NetworkAddressChanged += new NetworkAddressChangedEventHandler(NetworkChange_NetworkAddressChanged);
        }

        void NetworkChange_NetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e)
        {
            Console.WriteLine("NetworkChange_NetworkAvailabilityChanged");
        }

        void NetworkChange_NetworkAddressChanged(object sender, EventArgs e)
        {
            Console.WriteLine("NetworkChange_NetworkAddressChanged");
        }


    }