Iptmon is not working starting from Openwrt release 22.03 (due to replacement of iptables with nftables). As a workaround you can install Nlbwmon (https://github.com/jow-/nlbwmon) and then export statistics to collectd using lua plugin: https://github.com/mstojek/nlbw2collectd
With small change in the lua script you can get exactly the same statistic as you had with Iptmon. This lua plugin as for now do not supports IPv6.
4 Likes