I use the W5500 to connect a embedded device with a PC application using UDP protocol. I’m using a switch to connect the PC and the embedded device to the same IP network.
The connection works fine. But if I disconnect this PC and connect other PC with the same IP address (MAC is different), the connect doen’t work well anymore.
The problem is that W5500 sends the UDP packets to the old MAC address although this MAC is not available anymore (the old PC is disconnected from the switch). The W5500 doesn’t send a new ARP request.
What is the time live of the ARP entries in the ARP table of the W5500?. Can I force this ARP table to be erased?