/interface bridge
add admin-mac=CC:2D:E0:58:18:E0 auto-mac=no name=br-hardware protocol-mode=none vlan-filtering=yes
…
/interface bridge
add admin-mac=CC:2D:E0:51:8E:E0 auto-mac=no name=br-hardware protocol-mode=none vlan-filtering=yes
Duplicate MAC issues? Try using unique static MAC addresses from the proper range if you wish to do that: http://forum.mikrotik.com/t/interface-bridge-admin-mac-generation/108386/1