info about Transparent Filtering Bridge

[malmsteen81]

hi to all, i have saw online documentation about transparent bridge but i have some doubts specially about my actual enviroment.
Now i have 2 mikrotik router configured with vrrp on lan and wan (i have 2 wan interfaces) interfaces.
I need to setup a transparent proxy and ips server and i have thought to install opsense and put it before mikrotik as transparent bridge.
how can i setup a transparent bridge with 2 mikrotik configured like mine?
I can't  remove mikrotik due to vpn connection.

thank you

Andrea