Sample of what appears to be a memory leak in the WCF Discovery

Program.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net.Security;
using System.ServiceModel;
using System.ServiceModel.Discovery;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication7
{
	internal class Program
	{
		private static int NextPort = 12323;
		private static void Main(string[] args)
		{
			var doNotGc = new List<ServiceHost>();

			for (int i = 0; i < 15; i++)
			{
				doNotGc.Add(OpenServiceHost());

			}

			PrintMemory("Start: ");

			for (int i = 0; i < 15; i++)
			{
				var discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint());
				var findCriteria = new FindCriteria(typeof(IDiscoverableService))
				{
					Duration = TimeSpan.FromSeconds(1)
				};
				discoveryClient.Find(findCriteria);
				discoveryClient.Close();
				PrintMemory(i.ToString());
			}

			PrintMemory("Done: ");
	
			foreach (var serviceHost in doNotGc)
			{
				serviceHost.Close();
			}

			PrintMemory("Cleanup: ");
		}

		private static void PrintMemory(string title)
		{
			GC.Collect(GC.MaxGeneration);
			Console.WriteLine("{1} WorkingSet: {0:#,#} kb", Process.GetCurrentProcess().WorkingSet64 / 1024, title);
		}

		private static ServiceHost OpenServiceHost()
		{
			var serviceHost = new ServiceHost(new DiscoverableService());
			serviceHost.Description.Behaviors.Add(new ServiceDiscoveryBehavior());
			serviceHost.AddServiceEndpoint(new UdpDiscoveryEndpoint());
			var myAddress = new UriBuilder("net.tcp", Environment.MachineName, NextPort++, "/Discoverable").Uri;
			serviceHost.AddServiceEndpoint(typeof (IDiscoverableService), new NetTcpBinding(SecurityMode.None),
			                               myAddress);


			serviceHost.Open();
			return serviceHost;
		}
	}


	[ServiceContract(ProtectionLevel = ProtectionLevel.None)]
	public interface IDiscoverableService
	{
		[OperationContract]
		void DoSomething();
	}

	[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
	public class DiscoverableService : IDiscoverableService
	{
		public void DoSomething()
		{
			
		}
	}

}