if bits-ones > maxCIDRBits {
		return fmt.Errorf("specified %s is too large; for %d-bit addresses, the mask must be >= %d", cidrFlag, bits, bits-maxCIDRBits)
	}

	return nil
}

func validateServiceNodePort(options Extra) []error {
	var errs []error

	if options.KubernetesServiceNodePort < 0 || options.KubernetesServiceNodePort > 65535 {