[IPV6]: Comment MRT6_xxx sockopts in include/linux/in6.h.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/include/linux/in6.h b/include/linux/in6.h
index f674000..e6aa8de 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -260,4 +260,19 @@
#define IPV6_PREFER_SRC_CGA 0x0008
#define IPV6_PREFER_SRC_NONCGA 0x0800
+/*
+ * Multicast Routing:
+ * see include/linux/mroute6.h.
+ *
+ * MRT6_INIT 200
+ * MRT6_DONE 201
+ * MRT6_ADD_MIF 202
+ * MRT6_DEL_MIF 203
+ * MRT6_ADD_MFC 204
+ * MRT6_DEL_MFC 205
+ * MRT6_VERSION 206
+ * MRT6_ASSERT 207
+ * MRT6_PIM 208
+ * (reserved) 209
+ */
#endif