class CIDR {
  CIDR({this.ip, this.bits});

  String ip;
  int bits;

  @override
  String toString() {
    return '$ip/$bits';
  }

  String toJson() {
    return toString();
  }

  CIDR.fromString(String val) {
    final parts = val.split('/');
    if (parts.length != 2) {
      throw 'Invalid CIDR string';
    }

    ip = parts[0];
    bits = int.parse(parts[1]);
  }
}