How we supourt IPV6 for reachability

问题

I am using this code for check internet connection. What change I have to made for suppourt in IPV6. Please help any help would be appreciate.

 public enum ReachabilityType {
        case WWAN,
        WiFi,
        NotConnected
    }
    public class Reachability: NSObject {
        class func isConnectedToNetwork() -> Bool {
            var zeroAddress = sockaddr_in()
            zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
            zeroAddress.sin_family = sa_family_t(AF_INET)
            let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
                SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))
            }
            var flags = SCNetworkReachabilityFlags()
            if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
                return false
            }
            let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
            let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
            return (isReachable && !needsConnection)
        }
    }

来源：https://stackoverflow.com/questions/39631897/how-we-supourt-ipv6-for-reachability