Hello, I try to configure open vpn on a virtual server. I ordered a tun device (/dev/net/tun) which has the following permissions: [code]crw-r--r-- 1 root root 10, 200 Sep 8 11:59 tun[/code] In ifconfig the tun device is listed as follows [code] tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.241.38.1 P-t-P:10.241.38.2 Mask:255.255.255.255 UP POINTOPOINT NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) [/code] When i start the OpenVPN server I get the following error message in syslog [code]read from TUN/TAP : File descriptor in bad state (code=77)[/code] My server is configured as listed below: [code] port 1194 proto udp dev tun ca ./keys/ca.crt cert ./keys/server.crt key ./keys/server.key # This file should be kept secret dh ./easy-rsa2/keys/dh1024.pem server 10.241.38.0 255.255.255.0 ifconfig-noexec route-noexec keepalive 10 120 comp-lzo user openvpn group openvpn persist-key status openvpn-status.log verb 6 [/code] I have no idea how I can solve it. I was already in contact with my hosting provider but they now also do not know how to solve the issue with error code 77. thanks for your support Best Regards Florian

read from TUN/TAP : File descriptor in bad state (code=77)

gessnerfl

Hello,

I try to configure open vpn on a virtual server. I ordered a tun device (/dev/net/tun) which has the following permissions:

crw-r--r-- 1 root root 10, 200 Sep  8 11:59 tun

In ifconfig the tun device is listed as follows

tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:10.241.38.1  P-t-P:10.241.38.2  Mask:255.255.255.255
          UP POINTOPOINT NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

When i start the OpenVPN server I get the following error message in syslog

read from TUN/TAP : File descriptor in bad state (code=77)

My server is configured as listed below:

port 1194
proto udp

dev tun

ca ./keys/ca.crt
cert ./keys/server.crt
key ./keys/server.key  # This file should be kept secret

dh ./easy-rsa2/keys/dh1024.pem

server 10.241.38.0 255.255.255.0

ifconfig-noexec
route-noexec

keepalive 10 120

comp-lzo

user openvpn
group openvpn

persist-key

status openvpn-status.log

verb 6

I have no idea how I can solve it. I was already in contact with my hosting provider but they now also do not know how to solve the issue with error code 77.

thanks for your support

Best Regards
Florian

janjust

what kind of virtual server is this ? if it's openvz then your provider needs to do something on the container side as well (read e.g. http://wiki.openvz.org/VPN_via_the_TUN/TAP_device)

the fact that you already have a tun0 device shows that something is working, but this may not be what you want - who brought it up? normally openvpn does this by itself; it's possible to use a preconfigured device but this requires a different (more complicated) setup.