|Subject:||Re: [Qemu-discuss] How to set the network card for qemu to use?|
|Date:||Fri, 14 Oct 2016 12:11:23 +0300|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0|
This is not the right mailing list to ask about persistent NIC naming on your host system.
Assuming you've solved that and trying to get a VM working with eth1, do the following:
1) Set up a bridge on the host (let's say it's bridge0) with
eth1 as a slave. bridge0 is configured to auto-get IPv4 address
via DHCP. Different methods are described here
-device virtio-net,netdev=internet \
3) Start VM, post results. Please try to be concise ;) and post what you are trying to do and actual error messages. Also provide your Qemu version.
From: Miroslav Rovis
Sent: Friday, October 14, 2016 7:47AM
Subject: Re: [Qemu-discuss] How to set the network card for qemu to use?
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,,eth0I 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!
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