Re: [Qemu-devel] Any interest in an option to use an existing tun/tap device?

[Jesus M. Salvo Jr.]

Rob Browning wrote:

> It would be nice if qemu could be configured to use an existing
> tun/tap device rather than require root (or sudo) access.  Would
> others be interested in such an addition, perhaps "qemu -tun tun0" or
> similar.
>
> User Mode Linux allows something similar.  See the section "TUN/TAP
> with a preconfigured tap device" at
> http://user-mode-linux.sourceforge.net/networking.html.
>
> Thanks

I thought it already does, via the -tun-fd option ... though I have not 
seen an example of how to use this option / determine the file 
descriptor of an existing tun/tap interface, so I dont know how to use 
it as well. An example would be good.