This is what I'm trying to understand. Macvlan appears to be a much better solution as it allows 1-1 mapping and piggybacking onto all the automatic/set&forget

This is what I'm trying to understand. Macvlan appears to be a much better solution as it allows 1-1 mapping and piggybacking onto all the automatic/set&forget mechanisms that AWS provides. Obviously it needs a switch at the otherside that can handle a huge and quick changing arp table. Also if you have mac address limiting typical on edge switches, its a non flyer