public Ip4(string value, Qualifier qualifier, Ip4Addr ipAddress, Ip4CidrBlock cidrBlock)
     : base(value, qualifier)
 {
     IpAddress = ipAddress;
     CidrBlock = cidrBlock;
 }
 public DualCidrBlock(Ip4CidrBlock ip4CidrBlock, Ip6CidrBlock ip6CidrBlock)
 {
     Ip4CidrBlock = ip4CidrBlock;
     Ip6CidrBlock = ip6CidrBlock;
 }