七牛7.0.18才支持IPv6，pod "Qiniu", :git => 'https://github.com/qiniu/objc-sdk.git', :branch => 'AFNetworking-3.x' 这种写法只能是7.0.16，应该怎么写，求大神
现在可以了。我试了一下。
cat Podfile
pod "Qiniu", :git => 'https://github.com/qiniu/objc-sdk.git', :branch => 'AFNetworking-3.x'
Pod install
Updating local specs repositories
CocoaPods 1.0.0 is available.
To update use: `gem install cocoapods`
Until we reach version 1.0 the features of CocoaPods can and will change.
We strongly recommend that you use the latest version at all times.
For more information see http://blog.cocoapods.org
and the CHANGELOG for this version http://git.io/BaH8pQ.
Analyzing dependencies
Pre-downloading: `Qiniu` from `https://github.com/qiniu/objc-sdk.git`, branch `AFNetworking-3.x`
Downloading dependencies
Installing AFNetworking 3.1.0 (was 2.6.3)
Using HappyDNS (0.3.5)
Installing Qiniu 7.0.20 (was 7.0.20)
Generating Pods project
Integrating client project
Sending stats
Pod installation complete! There is 1 dependency from the Podfile and 3 total pods installed.