GTP tunnel from gNB to UPF

[endrigoshi]

Hi @s5uishida ,

As I was looking at the image in your repo, I noticed that you show that the u-plane traffic from UE to UPF goes through the gNB. However, as I have been investigating UERANSIM, I have seen that the tunnel is in fact created from the UE and not from the gNB. Meaning that the traffic does not flow at all through the gNB, but directly from UE to UPF.

Can you confirm whether in your case the traffic does indeed flow from UE -> gNB -> UPF and vice-versa?

Thanks a lot! :)