2 files changed, 13 insertions, 8 deletions

diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index 1b0ac5e9..df9eb75b 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -421,10 +421,9 @@ add_network(struct ospf_area *oa, net_addr *net, int metric, struct top_hash_ent
   if (en == oa->rt)
   {
     /*
-     * Local stub networks does not have proper iface in en->nhi
-     * (because they all have common top_hash_entry en).
-     * We have to find iface responsible for that stub network.
-     * Configured stubnets does not have any iface. They will
+     * Local stub networks do not have proper iface in en->nhi (because they all
+     * have common top_hash_entry en). We have to find iface responsible for
+     * that stub network. Configured stubnets do not have any iface. They will
      * be removed in rt_sync().
      */
 
@@ -1428,7 +1427,6 @@ ospf_ext_spf(struct ospf_proto *p)
   struct top_hash_entry *en;
   struct ospf_lsa_ext_local rt;
   ort *nf1, *nf2;
-  orta nfa = {};
   u32 br_metric;
   struct ospf_area *atmp;
 
@@ -1436,6 +1434,8 @@ ospf_ext_spf(struct ospf_proto *p)
 
   WALK_SLIST(en, p->lsal)
   {
+    orta nfa = {};
+
     /* 16.4. (1) */
     if ((en->lsa_type != LSA_T_EXT) && (en->lsa_type != LSA_T_NSSA))
       continue;
@@ -1577,6 +1577,7 @@ ospf_rt_reset(struct ospf_proto *p)
   FIB_WALK(&p->rtf, ort, ri)
   {
     ri->area_net = 0;
+    ri->keep = 0;
     reset_ri(ri);
   }
   FIB_WALK_END;
@@ -1939,9 +1940,12 @@ again1:
 	}
     }
 
-    /* Remove configured stubnets */
-    if (!nf->n.nhs)
+    /* Remove configured stubnets but keep the entries */
+    if (nf->n.type && !nf->n.nhs)
+    {
       reset_ri(nf);
+      nf->keep = 1;
+    }
 
     if (nf->n.type) /* Add the route */
     {
@@ -1981,7 +1985,7 @@ again1:
     }
 
     /* Remove unused rt entry, some special entries are persistent */
-    if (!nf->n.type && !nf->external_rte && !nf->area_net)
+    if (!nf->n.type && !nf->external_rte && !nf->area_net && !nf->keep)
     {
       if (nf->lsa_id)
 	idm_free(&p->idm, nf->lsa_id);
diff --git a/proto/ospf/rt.h b/proto/ospf/rt.h
index 842792f0..589d2bc5 100644
--- a/proto/ospf/rt.h
+++ b/proto/ospf/rt.h
@@ -84,6 +84,7 @@ typedef struct ort
   u32 lsa_id;
   u8 external_rte;
   u8 area_net;
+  u8 keep;
 
   struct fib_node fn;
 }