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-rw-r--r--include/linux/in.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/in.h b/include/linux/in.h
index 01129c0ea87..e0337f11d92 100644
--- a/include/linux/in.h
+++ b/include/linux/in.h
@@ -111,6 +111,7 @@ struct in_addr {
#define MCAST_LEAVE_SOURCE_GROUP 47
#define MCAST_MSFILTER 48
#define IP_MULTICAST_ALL 49
+#define IP_UNICAST_IF 50
#define MCAST_EXCLUDE 0
#define MCAST_INCLUDE 1