src: https://github.com/ntop/n2n
to fix osx(ios) error: https://gist.github.com/tevino/9798566
ios network extension doc: https://developer.apple.com/documentation/networkextension
src: https://github.com/ntop/n2n
to fix osx(ios) error: https://gist.github.com/tevino/9798566
ios network extension doc: https://developer.apple.com/documentation/networkextension