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On 02/09/2012 10:25 AM, Bernhard M. Wiedemann wrote:
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> Hello,
>
> I'm looking for comments on the attached patch.
>
> On the net I found older/different versions of
> nova/network/linux_net.py
> containing
> if err and err != 'RTNETLINK answers: File exists\n':


Hi Bernhard-

I came across the same thing on Ubuntu yesterday.  Recent versions of 
iproute2 have switched (or fixed, apparently) return codes when 
unnecessarily adding or removing addresses.  This is a new issue on 
Ubuntu Precise atm and imagine will be on future releases of other 
distros.  There is a review pending that fixes this at 
https://review.openstack.org/#change,3934 and a LP linked from there.

Adam