Watchdog on DietPi / RaspberryPi Zero

Hello
I tried to activate the watchdog on my system like shown here:

When I start the watchdog service I get the following errors

Jan 08 21:13:14 DietPi systemd[1]: Starting watchdog daemon...
Jan 08 21:13:15 DietPi watchdog[857]: unknown protocol icmp
Jan 08 21:13:15 DietPi sh[857]: watchdog: unknown protocol icmp
Jan 08 21:13:15 DietPi systemd[1]: watchdog.service: Control process exited, code=exited, status=2/INVALIDARGUMENT
Jan 08 21:13:15 DietPi systemd[1]: watchdog.service: Control process exited, code=exited, status=1/FAILURE
Jan 08 21:13:15 DietPi systemd[1]: watchdog.service: Failed with result 'exit-code'.
Jan 08 21:13:15 DietPi systemd[1]: Failed to start watchdog daemon.
Jan 08 21:13:15 DietPi systemd[1]: watchdog.service: Triggering OnFailure= dependencies.

Can you help me?

Can you share the service configuration. And maybe you would need to install packages like iputils-ping

here’s my configuration:

watchdog.conf.txt (5.9 KB)

iputils-ping was already installed…