[Qemu-devel] TAP Win32 broken for newer OpenVPN?

[Qemu-devel] TAP Win32 broken for newer OpenVPN?

[Bernd Waldboth]

Hello,

i noticed that when I updated the OpenVPN Tap Driver
for Windows with the one coming in OpenVPN version
2.04 or 2.05, the same qemu.exe isn't able to connect
to the tap-device anymore. The old driver works without
problem. I tried it on different machines.
Did anyone else notice the same behaviour?
Maybe for the future someone is able to update the patch?
I looked through the in source of the patch
in hope for an "easy" solution like some naming thing etc.,
but I wasn't able to find anything "obvious".
My concrete problem is that I manually deployed version
2.04 of the OpenVPN Tap-driver on about 30 machines
while I tested only with an older version, and now I
saw that Qemu does not cooperate with that version
anymore. For me it would be much easier and faster to
recompile qemu with a newer patch than to manually
reinstall an older TAP driver, because i can create an
MSI package of Qemu and deploy it via Active Directory.

My configuration:
Win XP Pro SP2 + all updates
Qemu 0.72 + dma + asyncIO + tap-win32

Thanks for your help
Bernd

Re: [Qemu-devel] TAP Win32 broken for newer OpenVPN?

[Dave Feustel]

On Saturday 12 November 2005 15:14, Bernd Waldboth wrote:
> Hello,
> 
> i noticed that when I updated the OpenVPN Tap Driver
> for Windows with the one coming in OpenVPN version
> 2.04 or 2.05, the same qemu.exe isn't able to connect
> to the tap-device anymore. The old driver works without
> problem. I tried it on different machines.
> Did anyone else notice the same behaviour?

I just started using Qemu 6.1 on OpenBSD 3.7. I have not
yet figured out how to connect Qemu to the internet yet.
I don't know if it's because I am not yet setting things up
correctly or because there is a bug in Qemu's ethernet interface
on Openbsd. There exist /dev/tun[0-3] but they all seem to belong
to Openbsd. What does Qemu do when the tuns are already there?

Thanks,
Dave Feustel

> Maybe for the future someone is able to update the patch?
> I looked through the in source of the patch
> in hope for an "easy" solution like some naming thing etc.,
> but I wasn't able to find anything "obvious".
> My concrete problem is that I manually deployed version
> 2.04 of the OpenVPN Tap-driver on about 30 machines
> while I tested only with an older version, and now I
> saw that Qemu does not cooperate with that version
> anymore. For me it would be much easier and faster to
> recompile qemu with a newer patch than to manually
> reinstall an older TAP driver, because i can create an
> MSI package of Qemu and deploy it via Active Directory.
> 
> My configuration:
> Win XP Pro SP2 + all updates
> Qemu 0.72 + dma + asyncIO + tap-win32
> 
> Thanks for your help
> Bernd
> 
> 
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
> 

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Re: [Qemu-devel] TAP Win32 broken for newer OpenVPN?

[Kazu]

Hi, Bernd.

Sunday, November 13, 2005 5:14 AM  Bernd Waldboth wrote:
> i noticed that when I updated the OpenVPN Tap Driver
> for Windows with the one coming in OpenVPN version
> 2.04 or 2.05, the same qemu.exe isn't able to connect
> to the tap-device anymore. The old driver works without
> problem. I tried it on different machines.
> Did anyone else notice the same behaviour?
snip.
>
> My configuration:
> Win XP Pro SP2 + all updates
> Qemu 0.72 + dma + asyncIO + tap-win32
>

It is strange. Tap works on my PC.
Here is a patch and a binary I used.
Tap version is 2.0.5 on WinXP pro SP2.
Tap and messagebox patches are applied.

http://www.h7.dion.ne.jp/~qemu-win/download/qemu-0.7.2-tap.patch
http://www.h6.dion.ne.jp/~kazuw/qemu-win/qemu-0.7.2-tap.zip


Regards,
Kazu

Re: [Qemu-devel] TAP Win32 broken for newer OpenVPN?

[Bernd Waldboth]

It is strange. Tap works on my PC.

> Here is a patch and a binary I used.
> Tap version is 2.0.5 on WinXP pro SP2.
> Tap and messagebox patches are applied.
>
> http://www.h7.dion.ne.jp/~qemu-win/download/qemu-0.7.2-tap.patch
> http://www.h6.dion.ne.jp/~kazuw/qemu-win/qemu-0.7.2-tap.zip
>
>
> Regards,
> Kazu

Sorry, my really stupid mistake. Somehow exactly when
trying with the old version I specified the name of the Tap
Adapter with exactly the same case of all the letters as
I used in the Control Panel. With the new driver I used
all lowercase letters and wasn't able to connect anymore.
Probably it would be best to ignore case in the patch if
it should at some point be integrated into the official source.

Thanks for your help
Bernd