--- a/master/device.h	Fri Jan 22 10:11:58 2016 +0100
+++ b/master/device.h	Fri Jan 22 13:09:43 2016 +0100
@@ -48,7 +48,7 @@
  * different memory regions, because otherwise the network device DMA could
  * send the same data twice, if it is called twice.
  */
-#define EC_TX_RING_SIZE 2
+#define EC_TX_RING_SIZE 0x10
 
 #ifdef EC_DEBUG_IF
 #include "debug.h"