@vdiluoffo are you using Beta1 or the current master ? If using Beta 1, you can define the rmw_implementation to use with rclpy by defining the environment variable `RCLPY_IMPLEMENTATION`: ```export RCLPY_IMPLEMENTATION=rmw_connext_cpp``` If using master, there is a single env variable used for both rlcpp and rclpy: `RMW_IMPLEMENTATION`: ```export RMW_IMPLEMENTATION=rmw_connext_cpp``` Hope this is what you're looking for --- [Visit Topic](https://discourse.ros.org/t/python-binding-to-connext-vs-frtps/1207/6) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: