On Thu, 2012-03-01 at 00:01 +0100, Freek de Kruijf wrote:
> The problem might be that the guest is not able to associate the parameters
> for the network device with the changed MAC address of the new VM. So try to
> change the MAC address (HardwareAddress) above to the same address as on the
> old host.
Thanks for the quick reply.
Please forgive my further questions. I'm just trying to understand you
here. You are suggesting that I bind the MAC of the (hardware) network
card in the new host to the same as the network card on the old host?
(That's what the HardwareAddress entry is: the hardware MAC on the
host.)
Forgive my skepticism, but if that's the problem then how does migrating
a VM *ever* work?
Anyway, certainly nothing in the guest.vbox file refers to the host's
MAC, either on the old or new host.
Old host guest.vbox snippet:
<Adapter slot="0" enabled="true" MACAddress="080027943BC1" cable="true"
speed="0" type="82540EM">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false"
use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
<BridgedInterface name="eth0"/>
</Adapter>
New host guest.vbox snippet:
<Adapter slot="0" enabled="true" MACAddress="0800271626A0" cable="true"
speed="0" type="82540EM">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false"
use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
<BridgedInterface name="eth0"/>
</Adapter>
Both only refer to "eth0". The MACAddress in each is, of course,
virtual, and only for the guest.
It just seems really unlikely to me that it should be necessary to match
the host systems hardware MACs. In any case, I would have to try it
sometime after hours, since the old host runs several services besides
the VM. And while the VM would only run on one host at a time, both
hosts must be up simultaneously for the time being. I don't think it
would be a good idea to be screwing with the network interfaces and MAC
addresses on the old host while most of the building is trying to use
the server.
-Alan
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