Sends icmp packets to a whole given network, every time the script starts generates a random secret encapsulated in every ping request.
python3 icmphostdiscover.py --> automatically network is 192.168.1.0 with netmask /24
python3 icmphostdiscover.py "Network ip" --> netmask is /24
python3 icmphostdiscover.py "Network ip" "NetMask" --> ip and mask manually set, don't use '/' for netmask