title: UDP Packet loss simulation & probability
body: <p>I am currently creating a server software that communicates with multiple arduino boards. Due to the hardware, I am using the UDP Protocol. I have a pretty simple mechanism that will resend packages in most of the cases when they get lost. I have two questions now:</p>
  
  <p>How probable is it that UDP Packets get lost in a Network with no Internet access and about 20 arduinos and one computer? Is it even neccessary to have a resend method?</p>
  
  <p>Is there a way I can simulate UDP Packet loss in this network to check if the resend mechanisms are working?</p>