ripd.c: correct bug that allowed route learnt through RIP to take precedence over connected routes
diff --git a/ripd/ripd.c b/ripd/ripd.c
index 40db33f..c8aa522 100644
--- a/ripd/ripd.c
+++ b/ripd/ripd.c
@@ -486,7 +486,9 @@
new_dist = rip_distance_apply (&rinfotmp);
new_dist = new_dist ? new_dist : ZEBRA_RIP_DISTANCE_DEFAULT;
old_dist = rinfo->distance;
- old_dist = old_dist ? old_dist : ZEBRA_RIP_DISTANCE_DEFAULT;
+ /* Only connected routes may have a valid NULL distance */
+ if (rinfo->type != ZEBRA_ROUTE_CONNECT)
+ old_dist = old_dist ? old_dist : ZEBRA_RIP_DISTANCE_DEFAULT;
/* If imported route does not have STRICT precedence,
mark it as a ghost */
if (new_dist > old_dist