diff -X exclude_files -Nabur ospfd2.12/src/ifcfsm.C ospfd2.13/src/ifcfsm.C
--- ospfd2.12/src/ifcfsm.C	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/ifcfsm.C	Tue Nov 20 13:32:58 2001
@@ -149,8 +149,11 @@
     // Newly up or down
     if (if_ostate == IFS_DOWN)
 	if_area->IfcChange(1);
-    else if (if_state == IFS_DOWN)
+    else if (if_state == IFS_DOWN) {
+        // Delete link-local-LSAs
+        delete_lsdb();
 	if_area->IfcChange(-1);
+    }
     // Want AllDRouters now?
     if (if_state > IFS_OTHER && if_ostate <= IFS_OTHER)
 	ospf->app_join(if_phyint, AllDRouters);
diff -X exclude_files -Nabur ospfd2.12/src/lsa.h ospfd2.13/src/lsa.h
--- ospfd2.12/src/lsa.h	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/lsa.h	Tue Nov 20 13:32:58 2001
@@ -103,6 +103,7 @@
 
     friend class OSPF;
     friend class SpfNbr;
+    friend class SpfIfc;
     friend class SpfArea;
     friend class LsaListIterator;
     friend class LocalOrigTimer;
diff -X exclude_files -Nabur ospfd2.12/src/lsdb.C ospfd2.13/src/lsdb.C
--- ospfd2.12/src/lsdb.C	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/lsdb.C	Tue Nov 20 13:32:58 2001
@@ -301,17 +301,28 @@
 	    lsa_flush(lsap);
 }
 
-/* Flush all LSAs from an area's link-state database.
+/* Delete LSAs from an area's link-state database. This is done
+ * silently, without reflooding, as this routine is only called when
+ * there are no operational interfaces left connecting to the
+ * area (this could be as a result of something like a change in
+ * the area's stub status). However, we do inform local applications
+ * that Opaque-LSAs have been deleted.
+ *
+ * This routine must perform the logic included in OSPF::DeleteLSA()
+ * for each LSA, although we choose to do it here in a more
+ * efficient manner.
+ *
  * All AS-external-LSAs are left alone, as they belong to all
- * areas. This happens when, for example, an area's
- * stub status changes, or the last interface to an area is
- * deleted.
+ * areas. Link-local-LSAs are deleted in SpfIfc::delete_lsdb().
  */
 
-void SpfArea::flush_lsdb(bool everything)
+void SpfArea::delete_lsdb()
 
 {
     byte lstype;
+    SpfArea *bb;
+
+    bb = ospf->FindArea(BACKBONE);
 
     for (lstype = 0; lstype <= MAX_LST; lstype++) {
 	AVLtree *tree;
@@ -322,14 +333,63 @@
 	if (!(tree = ospf->FindLSdb(0, this, lstype)))
 	    continue;
 	iter = new AVLsearch(tree);
-	while ((lsap = (LSA *)iter->next()))
-	    if (everything || lsap->adv_rtr() == ospf->my_id())
-		lsa_flush(lsap);
+	while ((lsap = (LSA *)iter->next())) {
+	    lsap->stop_aging();
+	    ospf->UnParseLSA(lsap);
+	    switch(lstype) {
+  	      case LST_AREA_OPQ:
+		// Notify applications of Opaque-LSA deletion?
+		if (lsap->lsa_rcvage != MaxAge) {
+		    lsap->lsa_rcvage = MaxAge;
+		    ospf->upload_opq(lsap);
+		}
+		break;
+	      case LST_GM:
+		if (bb && bb->n_active_if != 0)
+		    bb->grp_orig(lsap->ls_id(), 0);
+		break;
+	      default:
+		break;
+	    }
+	}
 	delete iter;
+	// This frees the LSAs, unless they are on some list
+	tree->clear();
+    }
+
+    // Reset database checksum
+    db_xsum = 0;
+}
+
+/* Silently delete all link-local Opaque-LSAs. Analogue to
+ * SpfArea::delete_lsdb(), this is only called when the
+ * interface becomes inoperational.
+ */
+
+void SpfIfc::delete_lsdb()
+
+{
+    AVLtree *tree;
+    AVLsearch *iter;
+    LSA *lsap;
+
+    tree = ospf->FindLSdb(this, if_area, LST_LINK_OPQ);
+    iter = new AVLsearch(tree);
+    while ((lsap = (LSA *)iter->next())) {
+	lsap->stop_aging();
+	ospf->UnParseLSA(lsap);
+	// Notify applications of Opaque-LSA deletion?
+	if (lsap->lsa_rcvage != MaxAge) {
+	    lsap->lsa_rcvage = MaxAge;
+	    ospf->upload_opq(lsap);
     }
+    }
+    delete iter;
+    // This frees the LSAs, unless they are on some list
+    tree->clear();
 
-    // Get rid of things from MaxAge list immediately
-    ospf->free_maxage_lsas();
+    // Reset database checksum
+    db_xsum = 0;
 }
 
 /* Parse an LSA. Call the LSA-specific parse routine. If that
diff -X exclude_files -Nabur ospfd2.12/src/ospf.h ospfd2.13/src/ospf.h
--- ospfd2.12/src/ospf.h	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/ospf.h	Tue Nov 20 13:32:58 2001
@@ -329,7 +329,7 @@
     // Version numbers
     enum {
 	vmajor = 2,	// Major version number
-	vminor = 12,	// Minor version number
+	vminor = 13,	// Minor version number
     };
 
     // Entry points into the OSPF code
diff -X exclude_files -Nabur ospfd2.12/src/spfarea.C ospfd2.13/src/spfarea.C
--- ospfd2.12/src/spfarea.C	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/spfarea.C	Tue Nov 20 13:32:58 2001
@@ -169,7 +169,7 @@
     while ((ip = if_iter.get_next()))
 	delete ip;
     // Delete database
-    flush_lsdb();
+    delete_lsdb();
     // Remove ABRs
     while ((abr = (RTRrte *) abr_iter.next())) {
 	abr_tbl.remove(abr);
@@ -283,7 +283,7 @@
     }
     else if (n_active_if == 0) {
 	ospf->rl_orig();
-	flush_lsdb(true);
+	delete_lsdb();
     }
 }
 
@@ -330,9 +330,10 @@
     // Take down interfaces to area
     while ((ip = iter.get_next()))
 	ip->run_fsm(IFE_DOWN);
-    // Flush all our self-originated LSAs in area
-    flush_lsdb();
+    // Delete entire link-state database
+    delete_lsdb();
     // Bring up interfaces that are physically operational
+    // This will re-create the area's link-state database
     iter.reset();
     while ((ip = iter.get_next())) {
 	if (sys->phy_operational(ip->if_phyint))
diff -X exclude_files -Nabur ospfd2.12/src/spfarea.h ospfd2.13/src/spfarea.h
--- ospfd2.12/src/spfarea.h	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/spfarea.h	Tue Nov 20 13:32:58 2001
@@ -97,7 +97,7 @@
     void asbr_orig(class ASBRrte *rte, int forced=0);
     bool needs_indication();
     void grp_orig(InAddr group, int forced=0);
-    void flush_lsdb(bool everything=false);
+    void delete_lsdb();
     void a_flush_donotage();
     void reinitialize();
     void generate_summaries();
diff -X exclude_files -Nabur ospfd2.12/src/spfifc.h ospfd2.13/src/spfifc.h
--- ospfd2.12/src/spfifc.h	Thu Nov 15 13:04:46 2001
+++ ospfd2.13/src/spfifc.h	Tue Nov 20 13:32:58 2001
@@ -218,6 +218,7 @@
     SpfArea *transit_area();
     rtid_t *vl_endpt();
     void AddTypesToList(byte lstype, LsaList *lp);
+    void delete_lsdb();
 
     // Virtual functions
     virtual void clear_config();

.