[libvirt-users] how to disable vnet_hdr through libvirt

[Daniel P. Berrange]

On Thu, Mar 06, 2014 at 03:46:18PM +0000, JIANFENG TANG wrote:
> Daniel P. Berrange <berrange at ...> writes:
> 
> > 
> > On Tue, Mar 04, 2014 at 03:56:06PM +0000, Jianfeng Tang wrote:
> > > Thank you Daniel. How difficult to extend libvirt for this? One critical
> > > application on my VM needs to turn vnet_hdr off.
> > 
> > Can you explain why in more detail. We don't expose this as a configurable
> > setting because we don't believe there's any compelling reason to disable
> > it. ie it offers clear performance benefits with no downsides.
> 
> 
> No special reason. Just in my case I was told to turn off vnet_hdr in order
> to make my VM work properly. 

Without technical details of why the person told you todo that, I'd say
that is a bogus request, so not a reason to support this as a tunable.

Regards,
Daniel
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