Hello dear free5gc team,
my fellow student and I are trying to resend pfcp packages via scapy from the testRegistration test (which we captured with wireshark).
But we are struggeling to get a reply from the UPF.
We started the UPF independly as described on github and send the packages to 127.0.0.8:8805,
but with no effect on the UPF. (Wireshark can capture our request but does not receive a reply).
Another thing we tried is to start the whole free5gc Network and send the packages to 10.200.200.101:8805 .
We also tried to change the checksums and mac addresses but with no success.
Maybe you have an idea why this doesnt work like that ?
Is it generally possible to use pfcp packets to test the N4 Interface or do we need to handle more in advance ?
Thank you very much in advance