自从去年6月1号Apple明文规定所有开发者提交新版本都必须支持IPV6-Only的网络，估计很多iOS开发者都遇到由于IPV6网络不支持造成的审核被拒的情况, 我被坑的不轻啊, 下面就来分析一下IPV6问题如何解决。

首先附一个审核被拒的原文:

Guideline 2.1 - Performance - App Completeness
We discovered one or more bugs in your app when reviewed on iPad running iOS 10.3.2 on Wi-Fi connected to an IPv6 network.
Specifically, the app launched to a blank page.
Please see attached screenshots for details.

Next Steps
To resolve this issue, please run your app on a device while connected to an IPv6 network (all apps must support IPv6) 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.

This action could not be completed. Try again. (-22421)

报错如图所示:

以前一直以为像这种错误只可能是网络问题, 最近升级了xcode, 出现这个问题, 解决两天才弄出来. 想来也最怕这种定位不到的问题, 网上众说纷纭, 最后在苹果的官方论坛里找到这个解决办法, 下面几十个点赞, 看来出问题的不止我一个, 也谢谢他们的分享, 哈哈;