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-rw-r--r--sys/netinet/in.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index 56150dad49cc..40f595295860 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -462,6 +462,7 @@ __END_DECLS
#define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */
#define IP_MINTTL 66 /* minimum TTL for packet or drop */
#define IP_DONTFRAG 67 /* don't fragment packet */
+#define IP_RECVTOS 68 /* bool; receive IP TOS w/dgram */
/* IPv4 Source Filter Multicast API [RFC3678] */
#define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */