On the device to be discovered:
- Copy ip-discovery to /usr/bin and run 
chmod +x /usr/bin/ip-discovery - Copy ip-discovery.service to /etc/systemd/system, adjust the code-word, and run 
sudo systemctl daemon-reload && sudo systemctl start ip-discovery 
On the device wanting to discover the device to be discovered:
- Copy ip-discover to your home folder and run 
. ~/ip-discover