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tsftd
n00b
Joined: 21 May 2011
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 Posted: Wed Oct 10, 2012 7:06 am Post subject: OpenVPN TUN error, but TUN is compiled into kernel [SOLVED] |
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So I'm trying to set up an OpenVPN server, and am following the tutorial here: http://en.gentoo-wiki.com/wiki/OpenVPN
I have compiled my kernel with TUN/TAP support, but have removed the module option -- so I compiled it directly into the kernel:
| Code: | Device Drivers --->
Network device support --->
[*]Network device support
<*> Universal TUN/TAP device driver support |
Yet, when I try to start OpenVPN, I get the following error:
| Code: | linux # /etc/init.d/openvpn start
* Starting openvpn ...
FATAL: Module tun not found.
* TUN/TAP support is not available in this kernel
* ERROR: openvpn failed to start |
I have googled extensively, but unfortunately hits about people getting that error who *haven't* compiled TUN/TAP support flood out anyone who may have had the same issue as me. Does anyone know what could cause this? Or how I can confirm that TUN/TAP support is actually being built into the kernel/available? (I have double checked both menuconfig and the .config file, and it IS enabled)
for troubleshooting purposes, I have heavily modified the .config and have disabled everything that is non-essential (given that this is a production server), but I have no other issues on this system. It's possible that I have disabled something else that is required for TUN/TAP (despite not being listed under menuconfig), so here is my full config in pastebin: http://pastebin.com/24UL7Pj5
thanks for the help!
Last edited by tsftd on Thu Oct 11, 2012 10:10 am; edited 1 time in total |
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b0nafide
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Joined: 17 Feb 2008
Posts: 171
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| Posted: Wed Oct 10, 2012 6:08 pm Post subject: |
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Try | Code: | # dmesg | grep TUN
# ls -l /dev/net/tun |
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tsftd
n00b
Joined: 21 May 2011
Posts: 20
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| Posted: Thu Oct 11, 2012 12:17 am Post subject: |
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dmesg | grep TUN -> returns nothing
ls -l /dev/net/tun -> no such file or directory (in fact, there isn't even a /dev/net/ directory)
i'm particularly worried that something in
| Code: | networking support-->
networking options-->
TCP/IP networking |
is a hidden dependency, maybe something under advanced routing?
EDIT:
also, here is a pastebin of the actual kernel compilation. not sure if it's helpful, but http://pastebin.com/yLaqmF8G
Last edited by tsftd on Thu Oct 11, 2012 1:46 am; edited 1 time in total |
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Hu
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Joined: 06 Mar 2007
Posts: 21606
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| Posted: Thu Oct 11, 2012 1:22 am Post subject: |
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| You are not using devtmpfs, so your device manager will need to create the net/tun node. |
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tsftd
n00b
Joined: 21 May 2011
Posts: 20
Location: Here
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| Posted: Thu Oct 11, 2012 10:09 am Post subject: |
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| that is absolutely correct, compiling that (and automount) into the kernel fixed the issue. thanks a bunch! |
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