Roscore without peer to peer

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And the answer is "no" as this would be a complete departure from how pub-sub is implemented in ROS 1.

I was just wondering if it could be done easily. Would have been allowing me to test something quickly and give it a go.

Basically @gvdhoorn, in the solution we are building, we have several ROS1 Node. Therefore they are all build and running as a whole using docker. Each Node is a Docker container.

We have a docker internal network. The thing IS one of the containers need to be linked to the outside world. So what I tried to do was to get that container out of the internal network and instead let him on the host network. and gave him our Master Node docker ip. It works and see the Master Node but as the Master Node gives him IPs that are within the docker internal network. So it doesn't work. Hence my question.