http://bugs.winehq.org/show_bug.cgi?id=27653
--- Comment #11 from Juan Lang juan.lang@gmail.com 2011-11-07 11:04:00 CST --- Right, but 22355 was about missing interface names, but the current symptom appears to be that if_nameindex is failing, which is rather odd. Let me attach a little test program; please compile it and run it and attach the output. (Curiously, for me on Ubuntu, it says lo is not a loopback interface, but that's a different issue.)