I am somehow able to analyze netflow packet using my own netflow collector (build in python). It works for certain ip and CIDR(Classless Inter Domain routing), definitely not overlapping. What is the best way to support VRF(Virtual Routing and Forwarding) in netflow? I guess there is no any metadata in netflow packet for distinguishing either its VRF or not.
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collect routing vrf inputto your flow-record. Not sure on top of my head how it will arrive in a packed, but I suppose some sort oftcpdumpcan help determining that.