I have 0.8.3 installed and my net devices are still being defined via -net
rather than -netdev. I have found that using the latter allows my ethernet to
properly offload and gives a 35% performance gain. Looking through the
libvirt code I find in qemu_conf.c:
/* Possible combinations
*
* 1. Old way: -net nic,model=e1000,vlan=1 -net tap,vlan=1
* 2. Semi-new: -device e1000,vlan=1 -net tap,vlan=1
* 3. Best way: -netdev type=tap,id=netdev1 -device e1000,id=netdev1
*
* NB, no support for -netdev without use of -device
*/
How do I convince virsh/libvirt to use #3, the "Best way"?
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