iptables-netflow-dkms 2.4-2ubuntu0.3 (arm64 binary) in ubuntu focal

 ipt-netflow is an iptables/netfilter target which generates traffic
 statistics in NetFlow v5 and v9 format as well as in IPFIX format.
 .
 It provides high performance and scalability. For highest performance
 module could be run without conntrack being enabled in
 kernel. Reported to be able to handle 10Gbit traffic with more than
 1500000 pps with negligible server load (on S5500BC).