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-rw-r--r--proto/ospf/ospf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index ea366931..e3a42f5f 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -112,6 +112,7 @@ struct ospf_packet {
u16 length;
u32 routerid;
u32 areaid;
+#define BACKBONE 0
u16 checksum;
u16 autype;
u8 authetication[8];