Hi @francoisnel The container that performs the LB configuration is docker4x/l4controller-azure named as editions_controller. The one running on the leader node checks for any new services that have published a port and if that port is not yet present in the Azure LB, it configures a rule for it. You can see the core swarm side polling logic implemented here in Infrakit: https://github.com/docker/infrakit/tree/master/pkg/controller
The docker4x/l4controller-azure uses very similar code as the above in the Docker4Azure along with the fact that the service port poller is hooked up to the Azure APIs to publish the ports on the Azure LB.
You will also need to stop the editions_controller and have your own take effect. For that, you can simply execute: swarm-exec docker run -v /var/run/docker.sock:/var/run/docker.sock -v /usr/bin/docker:/usr/bin/docker -e containername=editions_controller docker4x/stopcontainer:latest