Is it possible on any of the higher end Mikrotik routers to support Qemu mactap support? Also known as Vepa mode. This is where a server expects the switch to redirect packets originating from multiple virtual servers on a group of vlans to return packets back to the proper etherswitch as necessary. This allows virtual hosts to talk to each other on the same real server without using a bridge.
Also known as 802.1Qbg