I use a W5200 to implement a TCP<–>serial gateway. Normally a PC enstablish a session with my converter , so the conveverter is a server , pc is the client in this case.
I checked the packets on ethernet using comview .
I give W5200 the IP address 10.0.0.212
When I give W5200 a MAC having 0x0b as the first digit , Arp request from PC are not answered from W5100. When I give W5200 a MAC having 0x02 as the first digit , Arp request from PC are answered and communication cannot be enstablished and ping 10.0.0.212 is not sent by PC because no arp entry is present with such address. I checked the arp table on PC and no other unit have 10.0.0.212 is present , therefore the ARP request is issued , with no answered.
Any idea ?
If needed I can attach the log of the answer and no answer situations.