[ROS Humble] Linux host and Docker container cannot talk with each other if docker-rootless is used

[goekce]

I start my container using:

docker create \
        -it -e "DISPLAY=:0" \
        --mount type=bind,src=/tmp/.X11-unix,dst=/tmp/.X11-unix --device=/dev/dri:/dev/dri \
        --mount source=home,target=/home/u \
        --name ros --net=host --ipc=host --pid=host  \
        registry.gitlab.com/goekce/turtlebot3-challenges \
        /usr/bin/tmux

On the container (Humble on Ubuntu) I use:

ros2 run demo_nodes_cpp talker

and on the host (Humble on ArchLinux) I use:

ros2 run demo_nodes_cpp listener

The listener cannot receive any packets.

Did someone encounter a similar problem?

[goekce]

I could solve the problem by starting the docker container as root. docker-rootless with subuids seems to cause problems in communication.

Could someone solve this problem on docker-rootless?