diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
index 7f221aea2f..fcb611f655 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
@@ -412,7 +412,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             uint IOC_IN = 0x80000000;
             uint IOC_VENDOR = 0x18000000;
             uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
-            m_socket.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
+            // TODO: this apparently works in .NET but not in Mono, need to sort out the right flags here.
+            // m_socket.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
 
             listenPort = newPort;