While building a virtual machine we ran into an error "Not enough MAC
addresses left in MAC Address Pool."  In the engine log I see this message.

2013-10-26 14:47:16,590 WARN
 [org.ovirt.engine.core.bll.network.vm.AddVmInterfaceCommand] (ajp--127.0.0.
1-8702-12) [6fc05fa4] CanDoAction of action AddVmInterface failed.
2013-10-26 14:47:16,591 ERROR
[org.ovirt.engine.api.restapi.resource.AbstractBackendResource] (ajp--127.0
.0.1-8702-12) Operation Failed: [Not enough MAC addresses left in MAC
Address Pool.]

This led me to look at the engine config where I see these
MacPoolRanges: 00:1A:4A:97:5E:00-00:1A:4A:97:5E:FF version: general
MaxMacsCountInPool: 100000 version: general

The MacPoolRange would seem to be the limiting factor here, cutting us off
at 256 MAC addresses, which happens to be the number of virtual machine we
currently have. I assume that updating the MacPoolRange and restarting the
engine would resolve this issue. Has anybody experienced this issue?  Why
would the pool size have 256 and the Max entry be set to 100000, that seems
like a large difference.
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