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-rw-r--r--inet/netinet/in.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/inet/netinet/in.h b/inet/netinet/in.h
index f541c5809d..460745ebb3 100644
--- a/inet/netinet/in.h
+++ b/inet/netinet/in.h
@@ -85,6 +85,8 @@ enum
#define IPPROTO_SCTP IPPROTO_SCTP
IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */
#define IPPROTO_UDPLITE IPPROTO_UDPLITE
+ IPPROTO_MPLS = 137, /* MPLS in IP. */
+#define IPPROTO_MPLS IPPROTO_MPLS
IPPROTO_RAW = 255, /* Raw IP packets. */
#define IPPROTO_RAW IPPROTO_RAW
IPPROTO_MAX