enc28j6 and Listening to UDP Broadcast

Projects Networking, Protocols, and Devices
1

Hello

I am using EtherCard lib on my Arduino Uno.

I'm sending uDP broadcasts using a laptop on 255.255.255.255 .
The broadcast is received on another laptop without issue on the same network.
The arduino won't react to it.
BUT if i send a UDP to the arduino's IP, that works !

Any idea on how to get the arduino to listen to broadcast udp ?

Code is pretty much the udp listener example.

Any ideas ?

#include <EtherCard.h>
#include <IPAddress.h>
static byte mymac[] = {0x74,0x69,0x69,0x2D,0x31,0x01 };

byte Ethernet::buffer[700];
void setup() 
{
   Serial.begin(9600);
  Serial.println("\n0.1");
  for(int i = 0;i< sizeof mymac;i++)
  {
    Serial.print(mymac[i],HEX);
    Serial.print(" ");
  }
   Serial.println("");
    if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
   Serial.println( "Failed to access Ethernet controller");
   
  
   if(!ether.dhcpSetup())
     Serial.println("DHCP Failed");
     
   ether.printIp("IP: ", ether.myip);
   
   
   ether.udpServerListenOnPort(&udpSerialPrint, 5000);  // callback to function
  }


 
void loop() 
{ 
ether.packetLoop(ether.packetReceive());
}

void udpSerialPrint(word port, byte ip[4], const char *data, word len) {
 IPAddress src(ip[0], ip[1], ip[2], ip[3]);
  Serial.println(src);
  Serial.println(port);
  Serial.println(data);
 Serial.println(len);

 

}