upd

TestApp/MyService.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Net;
 using ZeroLevel;
 using ZeroLevel.Services.Applications;
 
@@ -15,7 +16,10 @@ namespace TestApp
         protected override void StartAction()
         {
             Log.Info("Started");
-            Sheduller.RemindEvery(TimeSpan.FromSeconds(5), () => Log.Info("Still alive"));
+            Sheduller.RemindEvery(TimeSpan.FromSeconds(5), () => {
+                var client = ConnectToService(new IPEndPoint(IPAddress.Loopback, 8800));
+                client.Request<string, string>("upper", "hello", s => Log.Info(s));
+            });
         }
 
         protected override void StopAction()

TestApp/Program.cs

@@ -17,9 +17,6 @@ namespace TestApp
             var router = se.Service.UseHost(8800);
             router.RegisterInbox<string, string>("upper", (c, s) => s.ToUpperInvariant());            
 
-            var client = se.Service.ConnectToService(new IPEndPoint(IPAddress.Loopback, 8800));
-            client.Request<string, string>("upper", "hello", s => Console.WriteLine(s));
-
             se.WaitWhileStatus(ZeroServiceStatus.Running)
             .Stop();
         }

ZeroLevel/Services/BaseZeroService.cs

@@ -137,7 +137,7 @@ namespace ZeroLevel.Services.Applications
         {
             if (_state == ZeroServiceStatus.Running)
             {
-                return GetServer(new IPEndPoint(NetUtils.GetNonLoopbackAddress(), NetUtils.GetFreeTcpPort()), new Router()).Router;
+                return GetServer(new IPEndPoint(IPAddress.Any, NetUtils.GetFreeTcpPort()), new Router()).Router;
             }
             return _null_router;
         }
@@ -146,7 +146,7 @@ namespace ZeroLevel.Services.Applications
         {
             if (_state == ZeroServiceStatus.Running)
             {
-                return GetServer(new IPEndPoint(NetUtils.GetNonLoopbackAddress(), port), new Router()).Router;
+                return GetServer(new IPEndPoint(IPAddress.Any, port), new Router()).Router;
             }
             return _null_router;
         }