Hello all,
I installed free5gc in Ubuntu 20.04 and Ubuntu 18.04+kernel 5.0.0-23-generic, but I noticed that the upfgtp interface only got allocated an IPv6 address without an IPv4 address in both environments.
Therefore, my UE of UERANSIM could not ping the external Internet via UPF using GTP/ICMP.
The PDU session was successfully established, and the the UE had an IP(60.60.0.1) in the GTP tunnel.
I also tried to install the latest version of gtp5g from GitHub - PrinzOwO/gtp5g: Linux kernel module 5G GTP-U, but it didn’t work, too.
Does anyone have ideas about this issue?