今天收到苹果拒绝邮件，内容如下：
* 2. 1 Performance: App Completeness
### Guideline 2.1 - Performance - App Completeness
We discovered one or more bugs in your app when reviewed on iPad running iOS 11.2.5 on Wi-Fi connected to an IPv6 network.
Specifically, your app displayed an error message when tapped on “ 登录“ button.
Please see attached screenshots for details.
**Next Steps**
To resolve this issue, please run your app on a device to identify any issues, then revise and resubmit your app for review.
If we misunderstood the intended behavior of your app, please reply to this message in Resolution Center to provide information on how these features were intended to work.
For **new** apps, uninstall all previous versions of your app from a device, then install and follow the steps to reproduce the issue. For **updates**, install the new version as an update to the previous version, then follow the steps to reproduce the issue.
**Resources**
For information about testing your app and preparing it for review, please see [Technical Note TN2431: App Testing Guide](https://developer.apple.com/library/content/technotes/tn2431/_index.html).
For a networking overview, please review [About Networking](https://developer.apple.com/library/content/documentation/NetworkingInternetWeb/Conceptual/NetworkingOverview/Introduction/Introduction.html). For a more specific overview of App Review’s IPv6 requirements, please review the [IPv6 and App Review](https://forums.developer.apple.com/message/147579#147579) discussion on the Apple Developer Forum.
并有一个登录网络失败的截图。
根据这里2017-04-26 ios ipv6那些事（已完美解决）的描述
检查了访问日志，发现在苹果审核的时间段有美国的访问日志，推测根本不是ipv6的事。
解决方法：
修改客户端，增加登录的超时时间，并增加按钮的loading效果。
最后结果： 过了
