Something

Index: src/stream.c
===================================================================
--- src/stream.c        (revision 9043)
+++ src/stream.c        (working copy)
@@ -983,9 +983,15 @@
        {
          g_object_set (priv->fs_stream,
                        "stun-ip", priv->stun_server,
                        "stun-port", priv->stun_port,
+                       "transmitter", "libjingle",
                        NULL);
        }
+      else
+      {
+        g_object_set (priv->fs_stream,
+            "transmitter", "rawudp",
+            NULL);
+      }
     }
 }