Ros launch gets stuck on robot in 5G network - ros

Question

I am trying to set up a Ros Network between a Robot (Clearpath AGV) and a Multi-access edge computing device (MEC) via 5G. I start roscore on the MEC and launch some nodes there. Everything works fine, but when when starting any launch file on robot side they get stuck as if waiting for the roscore (with and without --wait). This happens also for a simple static_transform_publisher launch. Please find logs of an example launch and the terminal output when I interrupt via keyboard below
The Ros Network seems to be fully established since:
Rostopic list/echo/info works for topics I publish to both ways
Rosrun works on Robot and MEC
Various networking tools (Netcat,...) show that all registered ports are open both ways
More details:
Working with docker with kinetic installed.
Containers run in host network mode
ROS_MASTER_URI is set to the MECs IP
ROS_IP on the robot is set to its own IP
Both IPs are pingable from either machine.
Any help is appreciated!
Logs:
[roslaunch][INFO] 2020-10-05 15:35:44,123: starting in server mode
[roslaunch.parent][INFO] 2020-10-05 15:35:44,123: starting roslaunch parent run
[roslaunch][INFO] 2020-10-05 15:35:44,123: loading roscore config file /opt/ros/kinetic/etc/ros/roscore.xml
[roslaunch] [INFO] 2020-10-05 15:35:44,365: Added core node of type [rosout/rosout] in namespace [/]
[roslaunch.config][INFO] 2020-10-05 15:35:44,365: loading config file /root/catkin_ws/src/realsense-ro
s/realsense2_camera/launch/rs_camera. launch
[roslaunch] [INFO] 2020-10-05 15:35:44,391: Added node of type [nodelet/nodelet] in namespace [/camera/]
[roslaunch] [INFO] 2020-10-05 15:35:44,397: Added node of type [nodelet/nodelet] in namespace [/camera/]
[roslaunch][INFO] 2020-10-05 15:35:44,397: ... selected machine [] for node of type [nodelet/nodelet]
[roslaunch][INFO] 2020-10-05 15:35:44,397: ... selected machine [] for node of type [nodelet/nodelet]
[roslaunch.pmon][INFO] 2020-10-05 15:35:44,400: start_process_ monitor: creating ProcessMonitor
[roslaunch.pmon][INFO] 2020-10-05 15:35:44,400: created process monitor <ProcessMonitor(ProcessMonitor
-1, initial daemon)>
[roslaunch.pmon][INFO] 2020-10-05 15:35:44,400: start_process_ monitor: ProcessMonitor started
[roslaunch.parent][INFO] 2020-10-05 15:35:44,400: starting parent XML-RPC server
[roslaunch.server][INFO] 2020-10-05 15:35:44,400: starting roslaunch XML-RPC server
[roslaunch.server][INFO] 2020-10-05 15:35:44,400: waiting for roslaunch XML-RPC server to initialize
[xmlrpc] [INFO] 2020-10-05 15:35:44,400: XML-RPC server binding to 0.0.0.0:0
[xmlrpc] [INFO] 2020-10-05 15:35:44,401: Started XML-RPC server [http://10.0.91.105:41500/ ]
[xmlrpc] [INFO] 2020-10-05 15:35:44,401: xml rpc node: starting XML-RPC server
[roslaunch.pmon][INFO] 2020-10-05 15:35:50,254: ProcessMonitor.shutdown <ProcessMonitor (ProcessMonitor
-1, started daemon 140017957467904)>
[roslaunch.pmon][INFO] 2020-10-05 15:35:50,308: ProcessMonitor. post_run <ProcessMonitor(ProcessMonito
r-1, started daemon 140017957467904)>
[roslaunch.pmon][INFO] 2020-10-05 15:35:50,308: ProcessMonitor. post_run <ProcessMonitor(ProcessMonito
r-1, started daemon 140017957467904)>: remaining procs are []
[roslaunch.pmon][INFO] 2020-10-05 15:35:50,309: ProcessMonitor exit: cleaning up data structures and signals
[roslaunch.pmon][INFO] 2020-10-05 15:35:50,310: ProcessMonitor exit: pmon has shutdown
[rospy.core][INFO] 2020-10-05 15:35:50,312: signal_shutdown [atexit]
Terminal output:
root#CPR-R100-0067:~/catkin_ws# roslaunch realsense2_camera rs_camera. launch
«.. logging to /root/.ros/log/9cbf306c -0718-11eb-b8a5- fa163ea8af66/roslaunch-CPR-R100- 0067-954. log
Checking log directory for disk usage.
This may take awhile.
Press Ctrl-C to interruptDone checking log file disk usage.
Usage is <1GB.
^CTraceback (most recent call last):
File "“/opt/ros/kinetic/bin/roslaunch”, line 35, in <module>roslaunch.main()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/__ init__.py", line 308, in mainp.start()
File "“/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py”, line 268, in startself._start_infrastructure()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", Line 226, in _start_infrastructureself.start_server()
File "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/parent.py", line 177, in start_serverself.server.start()
File "“/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/server.py", line 376, in startcode, msg, val = ServerProxy(self.urt).get_pid()
File “/usc/lib/python2.7/xmlrpclib.py", line 1243, tn _ callreturn self.__send(self.name, args)
File "“/usc/lib/python2.7/xmlrpclib.py", line 1602, in _ requestverbose=self. verbose
File "“/usc/lib/python2.7/xmlrpclib.py", line 1283, in requestreturn self.single_request(host, handler, request_body, verbose)
File "“/usc/lib/python2.7/xmlrpclib.py", line 1311, tn single_requestself.send_content(h, request_body)
File "“/usc/lib/python2.7/xmlrpclib.py", line 1459, tn send_contentconnection.endheaders(request_body)
File "“/usr/lib/python2.7/httplib.py”, line 1082, in endheadersself._send_output(message_body)
File "“/usr/lib/python2.7/httplib.py”, Line 909, in _send_outputself.send(msg)
File "“/usr/lib/python2.7/httplib.py", line 871, in sendself .connect()
File "“/usr/lib/python2.7/httplib.py”, Line 848, in connectself.timeout, self.source_address)
File "“/usr/lib/python2.7/socket.py", line 566, in create_connectionsock.connect(sa)
File "“/usr/lib/python2.7/socket.py", line 228, in methreturn getattr(self._sock,name)(*args)
KeyboardInterrupt