using System;
using System.Net;
using System.Net.NetworkInformation;

public class Test
{
	public static void Main()
	{
		DisplayGatewayAddresses();
	}

	public static void DisplayGatewayAddresses()
	{
		Console.WriteLine("Gateways");
		NetworkInterface[] adapters  = NetworkInterface.GetAllNetworkInterfaces();
		foreach (NetworkInterface adapter in adapters)
		{
			IPInterfaceProperties adapterProperties = adapter.GetIPProperties();
			GatewayIPAddressInformationCollection addresses = adapterProperties.GatewayAddresses;
			Console.WriteLine(adapter.Description);
			if (addresses.Count >0)
			{
				foreach (GatewayIPAddressInformation address in addresses)
				{
					Console.WriteLine("  Gateway Address ......................... : {0}", 
						address.Address.ToString());
				}
				Console.WriteLine();
			}
		}
	}
}