tun2socks

tun2socks is designed to work with the NetworkExtension framework available since iOS 9 and OS X 10.11. It is based on the latest stable lwip with minimal modification.

Usage

Just read the comments in the Swift wrapper in tun2socks/wrapper.

You may be more interested in using NEKit which wraps around tun2socks.

Only TCP is supported.

All other protocols (UDP, ICMP, IGMP, ...) will not be supported since they are stateless or can not be supported in NetworkExtension.

IPv6 support

As of now, IPv6 is not supported since lwip 1.4 does not support dual stack. IPv6 will be supported in the next major version of lwip.