CentOS virt - Feb 2015 - Disable/stop nic in a virtual guest with virsh

Hi all,

How can I stop/disable a nic in a virtual guest using a virsh
command?? I am searching the same effect like if I unplug network
cable ... Is it possible?? I have tried with "detach-interface"
command without luck. I don't want to remove the nic from guest
configuration, only to stop the nic ...

Thanks.

P.D: Host is CentOS 6.6 x86_64 fully patched.

I don't think it can be done. I would try to remove the VM's vnet from
the bridge it's connected to.

HTH
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

----- Original Message -----
> From: "C. L. Martinez" <carlopmart at gmail.com>
> To: centos-virt at centos.org
> Sent: Tuesday, 17 February, 2015 08:18:56
> Subject: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
> Hi all,
> 
> How can I stop/disable a nic in a virtual guest using a virsh
> command?? I am searching the same effect like if I unplug network
> cable ... Is it possible?? I have tried with "detach-interface"
> command without luck. I don't want to remove the nic from guest
> configuration, only to stop the nic ...
> 
> Thanks.
> 
> P.D: Host is CentOS 6.6 x86_64 fully patched.
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> http://lists.centos.org/mailman/listinfo/centos-virt

On 17/02/15 09:18, C. L. Martinez wrote:
> Hi all,
> 
> How can I stop/disable a nic in a virtual guest using a virsh
> command?? I am searching the same effect like if I unplug network
> cable ... Is it possible?? I have tried with "detach-interface"
> command without luck. I don't want to remove the nic from guest
> configuration, only to stop the nic ...
Depending on your network architecture you could just ifdown
the vmnet, but this just works if you don't have multiple
vms on one vmnet (which you shouldn't).

HTH

-- 
Mit freundlichen Gr??en / Regards

Sven Kieske

Systemadministrator
Mittwald CM Service GmbH & Co. KG
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32339 Espelkamp
T: +49-5772-293-100
F: +49-5772-293-333
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On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske <s.kieske at mittwald.de>
wrote:
>
>
> On 17/02/15 09:18, C. L. Martinez wrote:
>> Hi all,
>>
>> How can I stop/disable a nic in a virtual guest using a virsh
>> command?? I am searching the same effect like if I unplug network
>> cable ... Is it possible?? I have tried with
"detach-interface"
>> command without luck. I don't want to remove the nic from guest
>> configuration, only to stop the nic ...
>
> Depending on your network architecture you could just ifdown
> the vmnet, but this just works if you don't have multiple
> vms on one vmnet (which you shouldn't).
>
> HTH
>
> --
Ok, to do a ifdown of virtual bridge it seems the only option.

Many thanks to all for your answers.