There isn't really a restriction that a downstream device will only have one mac address.
It might be another switch. Even if it's not; VM/container networking is often implemented by bridging the host's NIC to a virtual switch, exposing the MAC addresses of all VMs/containers to the network.
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There isn't really a restriction that a downstream device will only have one mac address.
It might be another switch. Even if it's not; VM/container networking is often implemented by bridging the host's NIC to a virtual switch, exposing the MAC addresses of all VMs/containers to the network.
Right, which is why the tiny 4 entry MAC table might be a problem.