TO_FLOYD_LINK(src->id(), dst->id()) = newExtendedRoute(hierarchy_, route, 1);
TO_FLOYD_PRED(src->id(), dst->id()) = src->id();
TO_FLOYD_LINK(src->id(), dst->id()) = newExtendedRoute(hierarchy_, route, 1);
TO_FLOYD_PRED(src->id(), dst->id()) = src->id();