and in the guest:
<interface type='direct'>
<source physical='eth0'>
...
</interface>
I like the simplicity of just having this in the guest XML and a way
to just indicate macvlan vs macvtap somehow.
macvlan and macvtap devices have to be created per-VM. How they're
created is non-trivial as you need to set flags which eventually get
down to twiddling bits on the physical interface.
So you essentially have two options: 1) punt the creation fo these
devices and just let it be specified per-device. libvirt would be
incapable of starting these guests automatically without some helper
tool. 2) allow the twiddling bits to be specified as part of the
per-domain information. <source physical='eth0' mode='vepa'> might be
enough but I'm not entirely qualified to understand exactly what the
various cases are.
Regards,
Anthony Liguori
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