Messages in this thread | | | From | Sander Eikelenboom <> | Subject | Linux 4.14-rc6 bisected regression tun devices not working anymore in openvpn | Date | Sat, 28 Oct 2017 16:57:48 +0200 |
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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
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