WATCHDOG - automatic restart when some ip is not reachable

[Wyrm]

Hi,
Is possible to have feature I know well from Mikrotik - WATCHDOG funtion???
It tests IP address on internet and when it is not reachable it restarts itself.
It also restarts itself in case of HW failure and makes some file to have data for diagonstics.

Does anybody know if this is possible on opnsense or is possible to use some freebsd utility ?

Thanks