icmp packet reply dropped by upf
zhonglin6666 opened this issue · comments
case:
UE 60.60.0.1
RAN 172.16.245.125
UPF CP EPC 172.16.245.49
DN 172.16.245.132
After succeed to establish PDU Session，UE send icmp request to DN with TEID 1，
DN receive icmp packet, and reply to UPF
UPF receive icmp，not access to upf function，but drop
In order so even start thinking about, please include:
- your VPP init.conf,
- a PCAP of the GTP side
- a PCAP of the PFCP communication
BTW: the project moved to https://github.com/travelping/upg-vpp, please use the latest version there and open a bug there.
THX!
UE Send icmp packet, trace as follows:
dpdk-input -->
ethernet-input -->
ip4-input -->
ip4-lookup -->
ip4-local -->
ip4-udp-lookup -->
upf-gtpu4-input -->
upf-ip4-flow-process -->
upf-ip4-classify -->
upf-ip4-input -->
upf-ip4-forward -->
ip4-input -->
ip4-lookup -->
ip4-rewrite -->
epc-output -->
epc-tx
but，UPF receive icmp reply trace as this:
dpdk-input
ethernet-input
ip4-input
ip4-lookup
ip4-drop
Can you tell me the right reply trace ?
THX!
success! UPF forward icmp reply to RAN