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-rw-r--r--include/uapi/linux/ipv6.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h
index 5a2991cf025..4bda4cf5b0f 100644
--- a/include/uapi/linux/ipv6.h
+++ b/include/uapi/linux/ipv6.h
@@ -63,6 +63,8 @@ struct ipv6_opt_hdr {
#define ipv6_destopt_hdr ipv6_opt_hdr
#define ipv6_hopopt_hdr ipv6_opt_hdr
+/* Router Alert option values (RFC2711) */
+#define IPV6_OPT_ROUTERALERT_MLD 0x0000 /* MLD(RFC2710) */
/*
* routing header type 0 (used in cmsghdr struct)