* Mono sucks. (Fixes crash due to Mono not implementing NetworkInformation.IPv4Mask aka Subnet masks)

OpenSim/Framework/NetworkUtil.cs

@@ -143,6 +143,8 @@ namespace OpenSim.Framework
         }
 
         static NetworkUtil()
+        {
+            try
             {
                 foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
                 {
@@ -158,6 +160,11 @@ namespace OpenSim.Framework
                     }
                 }
             }
+            catch (NotImplementedException)
+            {
+                // Mono Sucks.
+            }
+        }
 
         public static IPAddress GetIPFor(IPEndPoint user, string defaultHostname)
         {