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-rw-r--r--include/linux/if.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/if.h b/include/linux/if.h
index 32bf419351f..186070d5c54 100644
--- a/include/linux/if.h
+++ b/include/linux/if.h
@@ -50,7 +50,9 @@
#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
#define IFF_DORMANT 0x20000 /* driver signals dormant */
-#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|\
+#define IFF_ECHO 0x40000 /* echo sent packets */
+
+#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
/* Private (from user) interface flags (netdevice->priv_flags). */