Re: [Xen-users] xen-4.4.0 and (nic) assigned mac address errors

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Sat, 2014-06-21 at 16:01 -0400, squidmobile@xxxxxxxxxxx wrote:
> 21 jun 2014
> 
> greetings,
> 
> i ran xen in several versions on my system during the past eighteen
> months.  i currently run xen-4.4.0.  i usually assign a specific
> mac address to the nic's in my vm domains.  i take pains to NOT
> assign the same mac address twice.
> 
> in all of these versions, if i shut down a vm and then restart it,
> it will sometimes complain that the specified mac address is
> already in use.

What is exactly is complaining about this and what mechanism is it using
to try and determine whether a MAC is already in use?

The only thing which springs to mind is that you have something on your
network with is doing some sort of proxy arp type thing which is
confusing whatever is doing these checks.

>   it also sometimes happens if i merely reboot a
> vm via shutdown -r now.  if i restart the vm a second time, it will
> usually begin operating as expected.
> 
> what can cause this?  how can i prevent this error condition?
> 
> any questions, comments, or suggestions?
> 
> thank you.
> frank smith
> 



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