routeros-scripts/ip-addr-bridge

#!rsc by RouterOS
# RouterOS script: ip-addr-bridge
# Copyright (c) 2018-2021 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# enable or disable ip addresses based on bridge port state
# https://git.eworm.de/cgit/routeros-scripts/about/doc/ip-addr-bridge.md

:foreach Bridge in=[ / interface bridge find ] do={
  :local BrName [ / interface bridge get $Bridge name ];
  :if ([ :len [ / interface bridge port find where bridge=$BrName ] ] > 0) do={
    :if ([ :len [ / interface bridge port find where bridge=$BrName and inactive=no ] ] = 0) do={
      / ip address disable [ find where !dynamic interface=$BrName ];
    } else={
      / ip address enable [ find where !dynamic interface=$BrName ];
    }
  }
}