ospfd: flush type 5 when type 7 is removed

When the ASBR stops announcing a prefix into the NSSA area, the LSA
type 7 is removed from the area. However the ABR is refreshing the
type 5 in its LSDB while removing the Type 7 LSA. Routers outside
the area do not get an update.

With this change the LSA type 5 is flushed from the LSDB and the
change is announced to routers outside the area

Signed-off-by: ckishimo <carles.kishimoto@gmail.com>

diff --git a/ospfd/ospf_abr.c b/ospfd/ospf_abr.c
index f6c05049990392fe2658369e35f81f39850dc09c..5a9adcba0d9916c61534f83ee718b858cf32e5c3 100644 (file)
--- a/ospfd/ospf_abr.c
+++ b/ospfd/ospf_abr.c
@@ -642,6 +642,15 @@ static int ospf_abr_translate_nssa(struct ospf_area *area, struct ospf_lsa *lsa)
        old = ospf_external_info_find_lsa(area->ospf, &p);
 
        if (old) {
+               /* Do not continue if type 5 LSA not approved */
+               if (!CHECK_FLAG(old->flags, OSPF_LSA_APPROVED)) {
+                       if (IS_DEBUG_OSPF_NSSA)
+                               zlog_debug(
+                                       "ospf_abr_translate_nssa(): LSA Id %s type 5 is not approved",
+                                       inet_ntoa(old->data->id));
+                       return 1;
+               }
+
                if (IS_DEBUG_OSPF_NSSA)
                        zlog_debug(
                                "ospf_abr_translate_nssa(): found old translated LSA Id %s, refreshing",