diff --git a/ospf6d/ospf6_message.c b/ospf6d/ospf6_message.c
index 82d2d34..caebf5d 100644
--- a/ospf6d/ospf6_message.c
+++ b/ospf6d/ospf6_message.c
@@ -1797,7 +1797,8 @@
                                    sizeof (struct ospf6_header));
 
   /* if this is initial one, initialize sequence number for DbDesc */
-  if (CHECK_FLAG (on->dbdesc_bits, OSPF6_DBDESC_IBIT))
+  if (CHECK_FLAG (on->dbdesc_bits, OSPF6_DBDESC_IBIT) &&
+      (on->dbdesc_seqnum == 0))
     {
       struct timeval tv;
       if (quagga_gettime (QUAGGA_CLK_MONOTONIC, &tv) < 0)