// monitoring the certs and restart if the content of the certs changes.
	if len(a.proxyConfig.CustomConfigFile) > 0 {
		// there is a custom configuration. Don't write our own config - but keep watching the certs.
		a.envoyOpts.ConfigPath = a.proxyConfig.CustomConfigFile
		a.envoyOpts.ConfigCleanup = false
	} else {
		out, err := bootstrap.New(bootstrap.Config{
			Node:             node,