From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [RFC PATCH 2/2] virtio-net: introduce a new control to set macaddr
Date: Fri, 11 Jan 2013 11:13:04 +1030
Message-ID: <87ip741rdz.fsf@rustcorp.com.au>
References: <1357829141-25455-1-git-send-email-akong@redhat.com> <1357829141-25455-3-git-send-email-akong@redhat.com> <20130110152649.GF30731@redhat.com>
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To: "Michael S. Tsirkin" <mst@redhat.com>, akong@redhat.com
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"Michael S. Tsirkin" <mst@redhat.com> writes:
>> +	if (virtio_has_feature(vdev, VIRTIO_NET_F_MAC)) {
>> +		/* Set MAC address by writing config space */
>>  		vdev->config->set(vdev, offsetof(struct virtio_net_config, mac),
>>  		                  dev->dev_addr, dev->addr_len);
>> +	}
>>  
>
> By the way, why don't we fail the command if VIRTIO_NET_F_MAC is off?
> Rusty?

Looked back through the history for this one.  I think the theory is that
if the guest doesn't set VIRTIO_NET_F_MAC, it means it doesn't care:
it's up to the guest.

Cheers,
Rusty.