On Mon, Apr 1, 2013 at 11:06 AM, Arne Schwabe <a...@rfc2549.org> wrote: > > >>>>>> The "standard" utun.ko driver is sometimes problematic (e.g. VmWare >>>>>> Fusion 5 and tun.ko do not work together). >> >> If it is the other way around (use tun if it is available and if not, >> try utun) then anybody who has loaded tun will continue to work with >> that tun, and anybody who hasn't loaded tun will get utun if it is >> available. So nothing breaks. >> >> It's hard for a GUI like Tunnelblick that doesn't parse the >> configuration file to detect the situation (no dev-type option) to add >> a "dev-type tun" to force the use of tun. >> >> But if we know that utun works for OpenVPN, then I don't have any >> problem with the patch. But that utun "is sometimes problematic" makes >> me worried that this may not be the case. > > The short history behind the patch: I was investing why Tunnelblick was not > working on a collegues Macbook and as it turned out that you can have tun.ko > loaded or the VmWare Fusion network driver (at least on his Macbook). > Otherwise you get errors on loading the module. But I remembered something > about the utun stuff, found the example code again and come up with the > patch. The setence from the commit should have been: > > The "standard" tun.ko driver is sometimes problematic (e.g. VmWare Fusion 5 > and tun.ko do not work together). > > The utun driver not be fully compatbile with behaviour of the standard tun.ko > driver but all my tests (IPv6, IPv4) worked so far. For 2.3.x I fine with try > utun first or try tun first behaviour but for -master/2.4 I would like to > have try utun first so more people actually use utun so we get to know if it > is really 100% compatible/working.
Thanks; I get it. So it is the "standard" tun driver that is a problem, and the utun driver fixes that problem. In that case, patch is OK with me. By "the 'standard' tun.ko driver", do you mean "tun.kext" from tuntaposx (http://tuntaposx.sourceforge.net), which is what Tunnelblick uses, or are you talking about something else?
