diff --git a/ospf6d/ospf6_neighbor.c b/ospf6d/ospf6_neighbor.c
index 84f0b00..b7d2e40 100644
--- a/ospf6d/ospf6_neighbor.c
+++ b/ospf6d/ospf6_neighbor.c
@@ -484,6 +484,8 @@
     }
 
   THREAD_OFF (on->thread_send_dbdesc);
+  on->dbdesc_seqnum++;		/* Incr seqnum as per RFC2328, sec 10.3 */
+
   on->thread_send_dbdesc =
     thread_add_event (master, ospf6_dbdesc_send, on, 0);
 
@@ -520,6 +522,8 @@
     }
 
   THREAD_OFF (on->thread_send_dbdesc);
+  on->dbdesc_seqnum++;		/* Incr seqnum as per RFC2328, sec 10.3 */
+
   on->thread_send_dbdesc =
     thread_add_event (master, ospf6_dbdesc_send, on, 0);