title: What happens if ARP does not find an associated IP
body: <p>I understand the basics of how ARP works, one host sends out a MAC Broadcast with "Who has this IP?" and some host in the network answers with "I have that IP".</p>
  
  <p>But what happens if a Router is connected to the same LAN, the routers function would be to connect the LAN to the WAN (hope I got that right). Does the host asking for the adress then automatically switch and send a message to the connected router with his data or what happens?</p>