ERROR: Cannot ioctl TUNSETIFF tun: Operation not permitted (errno=1)

[markengel]

Hi,

I'm running OpenVPN by the PIVPN setup on a VPS. Also having a add-blocker running on the same server (Pi-hole)
Made some clients for my phones, tablet, pc and raspberry Pi.
Using the gui for windows, OpenVPN connect for android, everything works fine. No problems so far....

Now i try to connect the Raspberry Pi and it will not connect.

Installed:
sudo apt-get install network-manager-openvpn-gnome
sudo apt-get update && sudo apt-get install openvpn

I use this command: openvpn --config test.ovpn

this is what happens:

pi@nextcloudpi:~/Downloads $ openvpn --config test.ovpn
Sat Nov 18 15:41:42 2017 OpenVPN 2.4.0 arm-unknown-linux-gnueabihf [SSL (OpenSSL )] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Jul 18 2017
Sat Nov 18 15:41:42 2017 library versions: OpenSSL 1.0.2l 25 May 2017, LZO 2.08
Enter Private Key Password: ***********
Sat Nov 18 15:41:46 2017 WARNING: this configuration may cache passwords in memo ry -- use the auth-nocache option to prevent this
Sat Nov 18 15:41:46 2017 TCP/UDP: Preserving recently used remote address: [AF_I NET]162.252.xxx.xxx:1194
Sat Nov 18 15:41:46 2017 UDP link local: (not bound)
Sat Nov 18 15:41:46 2017 UDP link remote: [AF_INET]162.252.xxx.xxx:1194
Sat Nov 18 15:41:48 2017 [server_xxxxxxxxxxxx] Peer Connection Initiated wit h [AF_INET]162.252.xxx.xxx:1194
Sat Nov 18 15:41:49 2017 ERROR: Cannot ioctl TUNSETIFF tun: Operation not permit ted (errno=1)
Sat Nov 18 15:41:49 2017 Exiting due to fatal error


Anyone know what this mean?

[TinCanTech]

Try:

Code: Select all

$ sudo openvpn --config test.ovpn

[markengel]

well...., it did something! Thnx
Mayby a bit stupid

now i see another error

pi@nextcloudpi:~/Downloads $ sudo openvpn --config test.ovpn
Sat Nov 18 20:41:31 2017 OpenVPN 2.4.0 arm-unknown-linux-gnueabihf [SSL (OpenSSL )] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Jul 18 2017
Sat Nov 18 20:41:31 2017 library versions: OpenSSL 1.0.2l 25 May 2017, LZO 2.08
Enter Private Key Password: ********
Sat Nov 18 20:41:38 2017 WARNING: this configuration may cache passwords in memo ry -- use the auth-nocache option to prevent this
Sat Nov 18 20:41:38 2017 TCP/UDP: Preserving recently used remote address: [AF_I NET]162.252.xxx.xxx:1194
Sat Nov 18 20:41:38 2017 UDP link local: (not bound)
Sat Nov 18 20:41:38 2017 UDP link remote: [AF_INET]162.252.xxx.xxx:1194
Sat Nov 18 20:41:41 2017 [server_FqKy59HTcYmYceje] Peer Connection Initiated wit h [AF_INET]162.252.xxx.xxx:1194
Sat Nov 18 20:41:42 2017 TUN/TAP device tun1 opened
Sat Nov 18 20:41:42 2017 do_ifconfig, tt->did_ifconfig_ipv6_setup=0
Sat Nov 18 20:41:42 2017 /sbin/ip link set dev tun1 up mtu 1500
Sat Nov 18 20:41:42 2017 /sbin/ip addr add dev tun1 10.8.0.6/24 broadcast 10.8.0 .255
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2
Sat Nov 18 20:41:42 2017 Initialization Sequence Completed

And how can i see if it works or not works?

[TinCanTech]

Sat Nov 18 20:41:42 2017 /sbin/ip addr add dev tun1 10.8.0.6/24 broadcast 10.8.0 .255
RTNETLINK answers: File exists
Sat Nov 18 20:41:42 2017 ERROR: Linux route add command failed: external program exited with error status: 2

You can only run the same config once .. if you want to start it again make sure you stopped it first ..

Perhaps you need to start here:
https://openvpn.net/index.php/open-sour ... howto.html

[markengel]

Dont know how that happens. After a reboot it's doing the same thing. I dont think its running automaticly after a reboot. I test it with the server.
Is it possible it means something else?

[TinCanTech]

Please see:
HOWTO: Request Help !

[markengel]

Thnx, i will do.