for _, ep := range n.endpoints {
        if link, err := ns.NlHandle().LinkByName(ep.srcName); err == nil {
            if err := ns.NlHandle().LinkDel(link); err != nil {
                log.G(context.TODO()).WithError(err).Warnf("Failed to delete interface (%s)'s link on endpoint (%s) delete", ep.srcName, ep.id)
            }