https://forum.netgate.com/topic/46663/darkstat-iperf-arpwatch-need-to-have-settings-saved-after-upgrade-to-start-up
Darkstat, iperf & arpwatch need to have settings saved after upgrade to start up | Netgate Forum
Jul 21, 2012 - Subject says it all. After a system upgade, these packages don't start again, unless one goes to their settings page and hits save.
need tostart upiperfarpwatchsettings
https://cmd.nodjoy.com/c/arpwatch.html
arpwatch 命令，Linux arpwatch 命令详解：监听网络上ARP的记录 - Linux 命令搜索引擎
arpwatch:监听网络上ARP的记录 - 最专业的Linux命令大全，内容包含Linux命令手册、详解、学习，值得收藏的Linux命令速查手册。
arpwatchlinux
https://www.bpfire.net/download/loongfire/src/patches/arpwatch/
Index of /download/loongfire/src/patches/arpwatch
indexdownloadsrcpatchesarpwatch