I installed nlbwmon on 22.03.4 (on a NanoPi R4S) and I'm getting the error below (so no traffic data is being collected).
What seems to be the official nlbwmon repository (https://github.com/jow-/nlbwmon) was last updated 3 years ago.
Before I deep dive in troubleshooting this, I just wanted to confirm if nlwbmon is in fact expected to work with 22.03 or later releases.
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.587544] nf_conntrack_netlink: Unknown symbol nf_conntrack_register_notifier (err -2)
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.588425] nf_conntrack_netlink: Unknown symbol nf_connlabels_replace (err -2)
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.589085] nf_conntrack_netlink: Unknown symbol nf_conntrack_unregister_notifier (err -2)
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.590074] nf_conntrack_netlink: Unknown symbol nf_ct_expect_unregister_notifier (err -2)
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.590870] nf_conntrack_netlink: Unknown symbol nf_ct_expect_register_notifier (err -2)
Thu Jul 27 10:25:09 2023 kern.warn kernel: [ 1441.591714] nf_conntrack_netlink: Unknown symbol nf_conntrack_eventmask_report (err -2)
Thu Jul 27 10:25:09 2023 daemon.err modprobe: 1 module could not be probed
Thu Jul 27 10:25:09 2023 daemon.err modprobe: - nf_conntrack_netlink
Thu Jul 27 10:25:09 2023 daemon.err nlbwmon[4084]: Netlink receive failure: Invalid input data or parameter
Thu Jul 27 10:25:09 2023 daemon.err nlbwmon[4084]: Unable to dump conntrack: I/O error
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.687984] nf_conntrack_netlink: Unknown symbol nf_conntrack_register_notifier (err -2)
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.688866] nf_conntrack_netlink: Unknown symbol nf_connlabels_replace (err -2)
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.689526] nf_conntrack_netlink: Unknown symbol nf_conntrack_unregister_notifier (err -2)
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.690516] nf_conntrack_netlink: Unknown symbol nf_ct_expect_unregister_notifier (err -2)
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.691313] nf_conntrack_netlink: Unknown symbol nf_ct_expect_register_notifier (err -2)
Thu Jul 27 10:25:39 2023 kern.warn kernel: [ 1471.692158] nf_conntrack_netlink: Unknown symbol nf_conntrack_eventmask_report (err -2)
Thu Jul 27 10:25:39 2023 daemon.err modprobe: 1 module could not be probed
Thu Jul 27 10:25:39 2023 daemon.err modprobe: - nf_conntrack_netlink
Thu Jul 27 10:25:39 2023 daemon.err nlbwmon[4084]: Netlink receive failure: Invalid input data or parameter
Thu Jul 27 10:25:39 2023 daemon.err nlbwmon[4084]: Unable to dump conntrack: I/O error