L.S.,
While testing a linux 4.14-rc6 kernel i noticed OpenVPN didn't function
anymore.
My openvpn config uses tun devices and is pretty standard.
The openvpn version is current Debian stable: openvpn 2.4.0-6+deb9u2
>From the openvpn logging:
Sat Oct 28 16:03:34 2017 us=175829 TUN/TAP device opened
Sat Oct 28 16:03:34 2017 us=183027 Note: Cannot set tx queue length on : No
such device (errno=19)
Sat Oct 28 16:03:34 2017 us=183055 do_ifconfig,
tt->did_ifconfig_ipv6_setup=0
Sat Oct 28 16:03:34 2017 us=183071 /sbin/ip link set dev up mtu 1500
Cannot find device ""
Sat Oct 28 16:03:34 2017 us=200445 Linux ip link set failed: external
program exited with error status: 1
Sat Oct 28 16:03:34 2017 us=200482 Exiting due to fatal error
Sat Oct 28 16:38:17 2017 us=923381 TCP/UDP: Closing socket
Sat Oct 28 16:38:17 2017 us=925986 Closing TUN/TAP interface
The offending commit is:
0ad646c81b2182f7fa67ec0c8c825e0ee165696d
"tun: call dev_get_valid_name() before register_netdevice()"
Reverting this commit fixes the issue for me, it's unfortunate that the commit
it self seems to fix an other issue.
--
Sander
