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-rw-r--r--include/linux/in6.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/in6.h b/include/linux/in6.h
index bd55c6e46b2e..9b90cb296eb1 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -265,6 +265,9 @@ struct in6_flowlabel_req {
#define IPV6_PREFER_SRC_CGA 0x0008
#define IPV6_PREFER_SRC_NONCGA 0x0800
+/* RFC5082: Generalized Ttl Security Mechanism */
+#define IPV6_MINHOPCOUNT 73
+
/*
* Multicast Routing:
* see include/linux/mroute6.h.