Index: uspace/lib/c/include/net/device.h
===================================================================
--- uspace/lib/c/include/net/device.h	(revision 49bd793b2449248c736c623614dd68c794c66fc1)
+++ uspace/lib/c/include/net/device.h	(revision 221c9ec0fbbc7f15c19b6c609e290af3d4ea2b17)
@@ -77,4 +77,12 @@
 #define NIC_PART_NUMBER_MAX_LENGTH    64
 #define NIC_SERIAL_NUMBER_MAX_LENGTH  64
+
+#define NIC_DEFECTIVE_LONG               0x0001
+#define NIC_DEFECTIVE_SHORT              0x0002
+#define NIC_DEFECTIVE_BAD_CRC            0x0010
+#define NIC_DEFECTIVE_BAD_IPV4_CHECKSUM  0x0020
+#define NIC_DEFECTIVE_BAD_IPV6_CHECKSUM  0x0040
+#define NIC_DEFECTIVE_BAD_TCP_CHECKSUM   0x0080
+#define NIC_DEFECTIVE_BAD_UDP_CHECKSUM   0x0100
 
 /**