if len(confList.Plugins) == 0 {
			installLog.Warnf("CNI config list %s has no networks, skipping", confList.Name)
			continue
		}

		return filepath.Base(confFile), nil
	}

	return "", fmt.Errorf("no valid networks found in %s", confDir)
}

// newCNIConfig = istio-cni config, that should be inserted into existingCNIConfig
func insertCNIConfig(newCNIConfig, existingCNIConfig []byte) ([]byte, error) {