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Date: Tue, 16 Jul 2013 14:44:45 +0200
From: =?iso-8859-1?Q?Beno=EEt?= Canet <benoit.canet@irqsave.net>
Message-ID: <20130716124445.GC5061@irqsave.net>
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Subject: Re: [Qemu-devel] Alternative mac address setting
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To: =?iso-8859-1?Q?Beno=EEt?= Canet <benoit.canet@irqsave.net>
Cc: aliguori@us.ibm.com, qemu-devel@nongnu.org, stefanha@redhat.com


Sorry for the gibberish I misread the code.
Please ignore this mail.

Best regards

Beno=EEt

>Le Tuesday 16 Jul 2013 =E0 13:36:49 (+0200), Beno=EEt Canet a =E9crit :
>=20
> Hello,
>=20
> I want to implement an alternative mac address setting to allow a guest=
 using
> virtio-net to change it's mac address by itself.
>=20
> The main use case is high availability setups where a slave machine tak=
e the
> lead when the master is failing. (heartbeat)
>=20
> The thing that an alternate mac address setting would allow to do is to=
 make
> the switch _without_ requiring a gratuitous arp.
>=20
> The slave guest would simply take the master guest mac address and resu=
me
> operations.
>=20
> I initially though about implementing a list of alternate mac address b=
ut I fear
> that in this context lists are frowed upon.
>=20
> Do you have any advice on how to implement this feature ?
>=20
> Should I support old net device declaration ?
>=20
> What is the strict minimum changes that would need to be done to implem=
ent the
> feature ?
>=20
> Best regards
>=20
> Beno=EEt
>=20