diff -r fe044345aaec -r 1cc6bcb1e6ae master/ethernet.h
--- a/master/ethernet.h	Wed Apr 26 12:12:57 2006 +0000
+++ b/master/ethernet.h	Wed Apr 26 16:43:01 2006 +0000
@@ -64,6 +64,7 @@
     ec_slave_t *slave; /**< pointer to the corresponding slave */
     ec_eoe_state_t rx_state; /**< state of the state machine */
     struct net_device *dev; /**< net_device for virtual ethernet device */
+    uint8_t opened; /**< net_device is opened */
 }
 ec_eoe_t;