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-rw-r--r--proto/ospf/topology.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/proto/ospf/topology.h b/proto/ospf/topology.h
index 16d4c78..7aa1625 100644
--- a/proto/ospf/topology.h
+++ b/proto/ospf/topology.h
@@ -21,7 +21,7 @@ struct top_hash_entry
void *lsa_body;
bird_clock_t inst_t; /* Time of installation into DB */
ip_addr nh; /* Next hop */
- ip_addr lb; /* Link back */
+ ip_addr lb; /* In OSPFv2, link back address. In OSPFv3, any global address in the area useful for vlinks */
struct ospf_iface *nhi; /* Next hop interface */
#ifdef OSPFv3
u32 lb_id; /* Interface ID of link back iface (for bcast or NBMA networks) */