[Openvpn-users] kernel: unregister_netdevice: waiting for tap0 to become free. Usage count = 1

[Victor Soroka <director@xxxxxxxxxxxx>]

Hello!

Sometime if openvpn server reboots or network problem occuring my linux client starts to write this message to syslog:

Aug  3 11:43:26 gbs kernel: unregister_netdevice: waiting for tap0 to become free. Usage count = 1
Aug  3 11:44:07 gbs last message repeated 4 times
Aug  3 11:45:18 gbs last message repeated 7 times
Aug  3 11:46:08 gbs last message repeated 5 times
Aug  3 11:46:18 gbs kernel: unregister_netdevice: waiting for tap0 to become free. Usage count = 1
Aug  3 11:46:49 gbs last message repeated 3 times
Aug  3 11:47:59 gbs last message repeated 7 times
Aug  3 11:49:00 gbs last message repeated 6 times

I can't kill openvpn:

# ps x |grep openvpn
12781 ?        D      0:05 /usr/sbin/openvpn test.conf
# kill -9 12781
# ps x |grep openvpn
12781 ?        D      0:05 /usr/sbin/openvpn test.conf

I have searched google for this error and found discussion about appletalk only and nothing else.

my test.conf :

client
dev tap
proto tcp
remote XXX.XXX.XXX.XXX 1194
resolv-retry infinite
nobind
ca keys/test-ca.crt
cert keys/test-client.crt
key keys/test-client.key
tls-auth keys/test-ta.key 1
cipher AES-128-CBC
comp-lzo
verb 1

If anybody knows what the problem ? Why it can't free tap0 and why I can't kill openvpn ?

Because of this error I must reboot my linux box 5-6 times daily.

Thanks.

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