[libvirt] set link state for ethernet network devices

Laine Stump laine at laine.org
Tue May 16 22:30:07 UTC 2017

On 05/16/2017 06:27 PM, Laine Stump wrote:
> On 05/10/2017 04:58 AM, Vasiliy Tolstov wrote:
>> Hi! Sometimes ago i'm write patch for setting link state of network
>> interface for ethernet type (tap).
>> Now i'm try libvirt 3.3.0 and see, that  tap interfaces is up but in
>> xml i'm try to specify
>> <link state='down'>
>> also i'm try
>> <source><link state='down'></source>
>> Nothing changed. Laine says, that link state is only for internal
>> representation, and to modify link state on host side i need to
>> specify <source><link state='down'></source>.
> I remember we talked about implementing that, but did we actually do it?
> I may implied/suggested that I would, and then dropped the ball (it's
> happened before :-/)

Yep :-( I looked through the thread and see that I had said I was
writing a patch to do that, but apparently I never finished it and it's
sitting somewhere on one of the dozens of "mystery branches" in my sandbox.

> Definitely I did push the patch that disconnects the up/down status of
> the host side of the tap from the up/down status of the emulated NIC.
>> For history please check email thread "qemu: remove unnecessary
>> setting of tap device online state"
>> So does this bug or it my mistake?
>> Thanks!
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