Hello, I want to implement an alternative mac address setting to allow a guest using virtio-net to change it's mac address by itself.
The main use case is high availability setups where a slave machine take the lead when the master is failing. (heartbeat) The thing that an alternate mac address setting would allow to do is to make the switch _without_ requiring a gratuitous arp. The slave guest would simply take the master guest mac address and resume operations. I initially though about implementing a list of alternate mac address but I fear that in this context lists are frowed upon. Do you have any advice on how to implement this feature ? Should I support old net device declaration ? What is the strict minimum changes that would need to be done to implement the feature ? Best regards Benoît
