新的 App Store Review Guidelines 关于 IPv6 的表述是否意味着服务端也必须 IPv6 了？

Apple 之前有发过一个通知：

https://developer.apple.com/news/?id=05042016a

At WWDC 2015 we announced the transition to IPv6-only network services in iOS 9. Starting June 1, 2016 all apps submitted to the App Store must support IPv6-only networking. Most apps will not require any changes because IPv6 is already supported by NSURLSession and CFNetwork APIs. If your app uses IPv4-specific APIs or hard-coded IP addresses, you will need to make some changes. Learn how to ensure compatibility by reading Supporting IPv6 DNS64/NAT64 Networks and watch Your App and Next Generation Networks.

不过这个通知好像只是针对了那些硬编码 IP 地址，或者使用了 IPv4 专属 API 的应用，似乎只是做了静态的代码检查。

现在 App Store Review Guidelines 中有这种表述：

2.5.5 We will be reviewing on an IPv6 network, so if your app isn ’ t compatible with the IPv6 addressing, it may fail during review.

不知道这是否意味着应用的服务端也需要支持 IPv6 了？如果服务端不支持的话， APP 打开没崩溃，但是完全不能用估计也是要被拒的吧……