Hi michaelbensusan,
Two questions:
- Are you exporting both ingress and egress traffic from your network device for the given interface? Or if not, are you sure that you're monitoring whichever direction the device should be seeing the traffic go?
- Are you viewing both ingress and egress traffic in NTA? Or if not, are you sure that you're viewing whichever direction the device should be seeing the traffic go?
- Are you sure that the packet is going through the particular device and interface you're looking at?
If you're good on all those, post some screenshots of your IP ranges and data and I'll take a look.