Piotr

Do you run the dockerized version of the Open5gs or one installed manually?

could you show routing tables on the PC runnning gnb and open5gs container?

@wzh8267 any update on this issue?

ok, so you do not need to add `ogstun` manually on the core network PC. Please remove it. Instead, add the following route on the PC running open5gs container: ```...

hmm did you enable IP forwardind on the gnb PC? ``` sudo sysctl -w net.ipv4.ip_forward=1 sudo iptables -t nat -A POSTROUTING -o -j MASQUERADE ```

which PC is 10.42.0.130? could you share your gnb and UE config?

could you check if you can ping `10.53.1.2` from gnb pc?

and if you can ping the gnb from the open5gs container? ``` docker exec -it open5gs_5gc bash ping 10.53.1.1 ```

ah, my mistake, you need to check if you can ping the gnb (10.42.0.130) from open5gs container.

could you print the routing table inside the open5gs container?