Hi,
I’m trying to replicate the Multi UPF scenario posted on free5GC’s YouTube channel.
The IMS slice, PSA-UPF1 and UE2 are working fine and the UE can reach the internet.
However, I’m facing an unexplained connectivity issue with UE1, where it’s not receiving reply from neither the internet nor the MEC. At the same time, I’m able to capture the ICMP replies on both i-UPF and UPF2, and a “hw csum failure” on i-UPF in the case of intranet ping (all attached).
I have verified the configs multiple times, IP forwarding, NAT, Firewall… I have also tried turning off checksum offloading. What else could cause such problem?
Environment: free5GC 3.1.1, gtp5g 0.5.4, Ubuntu 20.04 (Kernel 5.4.0-120-generic), UERANSIM 3.2.6
i-upf.pcap (888 Bytes) psa-upf2.pcap (824 Bytes)