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-rw-r--r--lib/libospf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/libospf.h b/lib/libospf.h
index c8ada9d3c5..161c7635d8 100644
--- a/lib/libospf.h
+++ b/lib/libospf.h
@@ -52,6 +52,7 @@ extern "C" {
#define OSPF_DEFAULT_DESTINATION 0x00000000 /* 0.0.0.0 */
#define OSPF_INITIAL_SEQUENCE_NUMBER 0x80000001U
#define OSPF_MAX_SEQUENCE_NUMBER 0x7fffffffU
+#define OSPF_INVALID_SEQUENCE_NUMBER 0x80000000U
/* OSPF Interface Types */
#define OSPF_IFTYPE_NONE 0