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-rw-r--r--include/linux/in6.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/in6.h b/include/linux/in6.h
index 8689112d08f3..5b4e89b1ac68 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -183,5 +183,17 @@ struct in6_flowlabel_req
#define IPV6_IPSEC_POLICY 34
#define IPV6_XFRM_POLICY 35
+/*
+ * Multicast:
+ * Following socket options are shared between IPv4 and IPv6.
+ *
+ * MCAST_JOIN_GROUP 42
+ * MCAST_BLOCK_SOURCE 43
+ * MCAST_UNBLOCK_SOURCE 44
+ * MCAST_LEAVE_GROUP 45
+ * MCAST_JOIN_SOURCE_GROUP 46
+ * MCAST_LEAVE_SOURCE_GROUP 47
+ * MCAST_MSFILTER 48
+ */
#endif