32673 2016-10-27 14:43:27 +0300 /dev/net/tun is created as a regular file if missing 2016-10-27 14:43:27 +0300 1 1 4 Development Sisyphus vpnc-script unstable all Linux NEW P3 minor --- 1 imz shaba shaba qa-sisyphus oldest_to_newest 159512 0 imz 2016-10-27 14:43:27 +0300 vpnc-script-0.5.3-alt6 In a system without systemd (and without any preceding "modprobe tun"), openconnect (which must be using vpnc-script): * would fail with unclear errors like this: ioctl(5, TUNSETIFF, 0x7fffbc71f7d0) = -1 ENOTTY (Inappropriate ioctl for device) * and would have created /dev/net/tun as a regular file like this: open("/dev/net/tun", O_RDWR|O_CREAT, 0666) = 3 (which would prevent the creation of a correct device afterwards). A similar case (probably, the same bug) has been reported as a Debian bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780709 Work-around: rm /dev/net/tun # if it's a wrong regular file modprobe -r tun modprobe tun