// noRoutesError can be returned in case of no routes
type noRoutesError struct {
	message string
}

func (e noRoutesError) Error() string {
	return e.message
}

// IsNoRoutesError checks if an error is of type noRoutesError
func IsNoRoutesError(err error) bool {
	if err == nil {
		return false
	}
	switch err.(type) {
	case noRoutesError:
		return true
	default:
		return false
	}
}

var (

func ChooseAPIServerBindAddress(bindAddress net.IP) (net.IP, error) {
	ip, err := netutil.ResolveBindAddress(bindAddress)
	if err != nil {
		if netutil.IsNoRoutesError(err) {
			klog.Warningf("WARNING: could not obtain a bind address for the API Server: %v; using: %s", err, constants.DefaultAPIServerBindAddress)
			defaultIP := netutils.ParseIPSloppy(constants.DefaultAPIServerBindAddress)