[gentoo-user] Re: Qemu tun/tap privledge problem: HOWTO is wrong?

[Grant Edwards]

On 2007-12-18, Etaoin Shrdlu <shrdlu@×××××××××××××.org> wrote:

>> Even though I created tap0 with the command shown, I still have
>> to run Qemu as root or I get the following error:
>>
>> qemu -kernel-kqemu -localtime -hda w2kdisk.img -net nic
>>      -net tap,ifname=tap0,script=/usr/local/etc/qemu-ifup
>>
>> warning: could not open /dev/net/tun: no virtual network emulation
>> Could not initialize device 'tap'
>>
>> If I run qemu as root, it works fine.
>
> You also have to chmod go+rw /dev/net/tun (if you haven't
> already), and probably modify the related udev rule to make
> the change persistent.

That was the problem.  The user-owned tap device is necessary
but not sufficient to run qemu as a normal user.  That user
must also have r/w permission to /dev/net/tun.  I'll take a
shot at fixing up the Wiki page so it's correct.

-- 
Grant Edwards                   grante             Yow! Will this never-ending
                                  at               series of PLEASURABLE
                               visi.com            EVENTS never cease?

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