Re: [Qemu-discuss] How to set the network card for qemu to use?

[Miroslav Rovis]

On 161014-03:11+0200, Miroslav Rovis wrote:
...
> > > > Concrete setup is three NIC cards:
> > > > eth0
> > > > eth1
> > > > eth2
> > > >
> > > > And the question is simple: what -netdev options (or is there some other
> > > > way?) do I use to get qemu to use eth2?
And that proved, to me, impossible.
> 
> I think I should try and maybe get the NIC that I connect to internet
> with to get the name eth0 instead of the above.
...
And I thought of adding this line to kernel command line in grub.cnf :
> 
> netdev=21,,0x000000000001d000,,eth0
> 
> (and report back if that was, by some odd chance, successful)
> 

Here's the way I gone through, it has concluded, you'll see why I'm
posting it. Following is a text already previously written, all is
over by now here....

---
One unsuccessful attempt, similar to mine, that I found:

https://lkml.org/lkml/2005/3/10/213
(notice it's a company, and nobody replied)

Also I found this old thread:

https://www.mail-archive.com/address@hidden/msg13466.html
(which I, in the end, haven't read, there were other tries there... but
likely the result was similar or same to mine)

Similar solutions offered at:

http://unix.stackexchange.com/a/10260

(
full reqest uri (clean):
http://unix.stackexchange.com/questions/10254/how-to-change-the-order-of-the-network-cards-eth1-eth0-on-linux

It's very much worth noticing that there are some fine explanations there,
but part of those explanations look very much to be obsolete stuff --
year 2011
)

where the suggestion reads:

netdev=irq=2,name=eth0

( of course, changing it to:

netdev=irq=21,name=eth0 )

Maybe that should do.

So instead of what I first thought:
> netdev=21,,0x000000000001d000,,eth0

I think I should try:
netdev=irq=21,mem_start=0x000000000001d000,name=eth0

In the end I tried all of the above, and nothing worked. But nothing
nothing nothing. The kernel behaved as if there wasn't that line at all
(other then printing it in the logs).

I said further above: You'll see why I'm posting it. And it's because
this is probably impossible to do, and the kernel-parameters.txt should
probably be revises, at least for some ethernet cards.

It is probably that I have to use a different card, one that is eth0 on
every boot if I want qemu with pass-through.

Curiosity still lives here. If there were any successes in getting those
parameters to work, or if there are more explanations, I'll be glad to
here!

Regards!
-- 
Miroslav Rovis
Zagreb, Croatia
http://www.CroatiaFidelis.hr

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