diff --git a/samples/SimpleServer/Program.cs b/samples/SimpleServer/Program.cs
index b171a3a..77f6d7c 100644
--- a/samples/SimpleServer/Program.cs
+++ b/samples/SimpleServer/Program.cs
@@ -23,7 +23,7 @@ static void Main(string[] args)
 
             try
             {
-                myServer.BindTo(new CoapUdpEndPoint(IPAddress.Any, Coap.Port) { JoinMulticast = true });
+                myServer.BindTo(new CoapUdpEndPoint(Coap.Port) { JoinMulticast = true });
 
                 myServer.StartAsync(myHandler, CancellationToken.None).GetAwaiter().GetResult();
 
@@ -61,6 +61,8 @@ public HelloResource(string uri) : base(uri)
 
         public override CoapMessage Get(CoapMessage request)
         {
+            Console.WriteLine($"Got request: {request}");
+
             return new CoapMessage
             {
                 Code = CoapMessageCode.Content,
diff --git a/src/CoAPNet.Udp/CoapUdpEndPoint.cs b/src/CoAPNet.Udp/CoapUdpEndPoint.cs
index 180d43d..574b5e0 100644
--- a/src/CoAPNet.Udp/CoapUdpEndPoint.cs
+++ b/src/CoAPNet.Udp/CoapUdpEndPoint.cs
@@ -61,7 +61,7 @@ public CoapUdpEndPoint(UdpClient udpClient, ILogger<CoapUdpEndPoint> logger = nu
         }
 
         public CoapUdpEndPoint(int port = 0, ILogger<CoapUdpEndPoint> logger = null)
-            : this(new IPEndPoint(IPAddress.Any, port), logger)
+            : this(new IPEndPoint(IPAddress.IPv6Any, port), logger)
         { }
 
         public CoapUdpEndPoint(IPAddress address, int port = 0, ILogger<CoapUdpEndPoint> logger = null)
@@ -94,7 +94,9 @@ public Task BindAsync()
                 throw new InvalidOperationException("Can not bind to remote endpoint");
 
 
-            Client = new UdpClient(_endpoint) { EnableBroadcast = true };
+            Client = new UdpClient(AddressFamily.InterNetworkV6) { EnableBroadcast = true };
+            Client.Client.DualMode = true;
+            Client.Client.Bind(_endpoint);
 
             if (JoinMulticast)
             {