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calubro
Tux's lil' helper
Joined: 14 May 2005
Posts: 112
Location: vienna
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 Posted: Mon Mar 25, 2013 8:21 am Post subject: tun / openvpn |
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hi
i'm running a xen gentoo - domU an try to get openvpn working - when i try to start it i get:
| Code: | dmesg | grep tun
[ 0.202559] IPv4 over IPv4 tunneling driver
[ 0.203207] sit: IPv6 over IPv4 tunneling driver
[ 41.314000] tun: version magic '3.5.7-gentoo SMP mod_unload modversions 686 ' should be '3.5.7-gentoo SMP mod_unload 686 '
[64433.439891] tun: version magic '3.5.7-gentoo SMP mod_unload modversions 686 ' should be '3.5.7-gentoo SMP mod_unload 686 '
[66407.078295] tun: version magic '3.5.7-gentoo SMP mod_unload modversions 686 ' should be '3.5.7-gentoo SMP mod_unload 686 '
[66491.367548] tun: version magic '3.5.7-gentoo SMP mod_unload modversions 686 ' should be '3.5.7-gentoo SMP mod_unload 686 '
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| Code: | ll /dev/net/tun
crw-rw-rw- 1 root root 10, 200 Mar 24 14:35 /dev/net/tun
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| Code: | # tail -f /var/log/messages
Mar 25 09:03:56 xxx openvpn[14538]: Socket Buffers: R=[87380->131072] S=[16384->131072]
Mar 25 09:03:56 xxx openvpn[14538]: ROUTE default_gateway=192.168.1.254
Mar 25 09:03:56 xxx kernel: [66491.367548] tun: version magic '3.5.7-gentoo SMP mod_unload modversions 686 ' should be '3.5.7-gentoo SMP mod_unload 686 '
Mar 25 09:03:56 xxx modprobe: FATAL: Error inserting tun (/lib/modules/3.5.7-gentoo/kernel/drivers/net/tun.ko): Invalid module format
Mar 25 09:03:56 xxx openvpn[14538]: Note: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19)
Mar 25 09:03:56 xxx openvpn[14538]: /bin/ifconfig 10.8.0.1 pointopoint 10.8.0.2 mtu 1500
Mar 25 09:03:56 xxx openvpn[14538]: Linux ifconfig failed: external program exited with error status: 1
Mar 25 09:03:56 xxx openvpn[14538]: Exiting
Mar 25 09:03:56 xxx /etc/init.d/openvpn[14537]: start-stop-daemon: failed to start `/usr/sbin/openvpn'
Mar 25 09:03:56 xxx /etc/init.d/openvpn[14523]: ERROR: openvpn failed to start
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| Code: | ifconfif -a
tunl0: flags=128<NOARP> mtu 1480
tunnel txqueuelen 0 (IPIP Tunnel)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
tun/tap device support is build in the kernel ...
Any ideas?
Thx, br Cal
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«calubro is the sound of the future.» |
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Hu
Moderator
Joined: 06 Mar 2007
Posts: 21593
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| Posted: Mon Mar 25, 2013 9:45 pm Post subject: |
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| I interpret this output to mean that, although TUN is currently builtin, it was at one time a module, and the module is still present on disk. The module is unnecessary and is configured for a different kernel than the one you now use, so it cannot load. You should remove it. |
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calubro
Tux's lil' helper
Joined: 14 May 2005
Posts: 112
Location: vienna
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| Posted: Tue Mar 26, 2013 6:57 am Post subject: |
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Hi Hu!
That's true ... it seems to use an old existing module! I tried to remove it and got this:
| Code: | # tail -f /var/log/messages
Mar 26 07:26:32 xxx openvpn[16401]: TLS-Auth MTU parms [ L:1544 D:140 EF:40 EB:0 ET:0 EL:0 ]
Mar 26 07:26:32 xxx openvpn[16401]: Socket Buffers: R=[87380->131072] S=[16384->131072]
Mar 26 07:26:32 xxx openvpn[16401]: ROUTE default_gateway=192.168.1.254
Mar 26 07:26:32 xxx modprobe: FATAL: Could not read '/lib/modules/3.5.7-gentoo/kernel/drivers/net/tun.ko': No such file or directory
Mar 26 07:26:32 xxx openvpn[16401]: Note: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19)
Mar 26 07:26:32 xxx openvpn[16401]: /bin/ifconfig 10.8.0.1 pointopoint 10.8.0.2 mtu 1500
Mar 26 07:26:32 xxx openvpn[16401]: Linux ifconfig failed: external program exited with error status: 1
Mar 26 07:26:32 xxx openvpn[16401]: Exiting
Mar 26 07:26:32 xxx /etc/init.d/openvpn[16400]: start-stop-daemon: failed to start `/usr/sbin/openvpn'
Mar 26 07:26:32 xxx /etc/init.d/openvpn[16386]: ERROR: openvpn failed to start
^C
xxx # ll /dev/net/tun
crw-rw-rw- 1 root root 10, 200 Mar 24 14:35 /dev/net/tun
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I tried to remove the section in the init script - but still same message ...
EDIT:
I got openVpn to start: changed the tun/tap to Module in the Kernel - and copied it to the domU ... not a real clean solution I think but working ...
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