explain clearly when things go wrong just because we broke the backward compatibility

[simgrid.git] / src / surf / surf_routing.c

diff --git a/src/surf/surf_routing.c b/src/surf/surf_routing.c
index e675518..4b4858a 100644 (file)
--- a/src/surf/surf_routing.c
+++ b/src/surf/surf_routing.c
@@ -1328,7 +1328,7 @@ static void model_full_set_route(routing_component_t rc, const char *src,
                          (void*)TO_ROUTE_FULL(*src_id, *dst_id)->generic_route.link_list,
                          (void*)link_route_to_test,
                          (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
-                         "The route between \"%s\" and \"%s\" already exists", src,dst);
+                         "The route between \"%s\" and \"%s\" already exists. If you are trying to define a reverse route, you must set the symmetrical=no attribute to your routes tags.", src,dst);
                xbt_dynar_free(&link_route_to_test);
        }
        else