Forget addresses of unreachable nodes.

We clear the cached address used for UDP connections when a node becomes
unreachable. This also prevents host-up scripts from passing the old, cached
address from when the host becomes reachable again from a different address.

diff --git a/src/graph.c b/src/graph.c
index 148f23c..f5aff5b 100644 (file)
--- a/src/graph.c
+++ b/src/graph.c
@@ -286,6 +286,9 @@ void sssp_bfs(void) {
                                free(envp[i]);
 
                        subnet_update(n, NULL, n->status.reachable);
+
+                       if(!n->status.reachable)
+                               update_node_udp(n, NULL);
                }
        }
 }