How to configure firewall on user defined Docker bridge?

Elaborating on Marek's Answer of setting the bridge name at creation time.

docker network create --driver bridge -o \
  "com.docker.network.bridge.name"="mynetwork_name" mynetwork

or if using a docker-compose file the following in the networks section

version: '3'
  .
  .
  .
networks:
  mynetwork:
    driver_opts:
      com.docker.network.bridge.name: mynetwork_name

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