4 ms·

As of Mac OS X 10.6 (xnu 1456.1.26), Darwin has native user tunnels. utun devices are sockets rather than character devices and are created through a special co

by gonzo 13y ago

As of Mac OS X 10.6 (xnu 1456.1.26), Darwin has native user tunnels. utun devices are sockets rather than character devices and are created through a special control socket. They behave the same as the Free/OpenBSD tunnels, in that they prepend the IP version as a 32-bit word. See: http://www.opensource.apple.com/source/xnu/xnu-2050.18.24/bsd/net/if_utun.c http://www.opensource.apple.com/source/xnu/xnu-2050.18.24/bs... Also: https://github.com/bbits/openvpn-utun https://github.com/bbits/openvpn-utun

justinsb 13y ago
Thank you so much for that (genuinely!). This is the reason I love HN: in this discussion we have someone that pointed out the probably-good-enough-for-the-99% SOCKS proxy (let them eat SOCKS!), and you've now pointed me to the "right" tun/tap device for Mac OS X, saving me from hours of fixing something that is obsolete. Now I really need to get a Mac and get this working there!
- gonzo 13y ago
  Its just OS X now. Apple dropped the "Mac" part.
davepeck 13y ago
Glad you found our bbits/openvpn-utun repo. We're currently using it in Cloak for Mac. (https://getcloak.com/ https://getcloak.com/ -- bbits is our github organization and Cloak's parent company.) Previously we maintained (and used) the tuntaposx kext, but keeping it up to date was becoming a burden. At WWDC, some of Apple's fine kernel networking engineers shared the proper incantations with us; this patch is the result.