The current implementation of the ICMP prober marks a node or an endpoint as unreachable after a single timed-out ICMP Echo request. In certain context this may be too aggressive and lead to a overly sensitive health reporting, where the nodes or endpoints status end up flapping between ok and unreachable.

To mitigate this, we may want to add a new option to set the number of retries before marking a node or endpoint as unreachable.