Hi Ronald,
By ping_arp I assume you’re referring to this:
I know I tried the standard ping, and some related, device trackers when I first starting using HA about a year and a half ago, but after some monitoring decided they didn’t help in my scenario. I.e., very seldom did they change before the GPS-based trackers did. But maybe it’s worth taking a look at this “new” custom integration.
Now having said that, I’m not sure how ping_arp applies to this topic, other than it could be used as yet another input to the composite tracker.