I recently had my Arduino bouncing UDP packets between my laptop and the Arduino (both receiving and sending). However, it seems now that I can only receive packets on the Arduino side. Therefore, I opened up the Example File > SendandRecieveUDP and changed the library to EthernetV2_0 and EthernetUDPV2_0. Then I changed the IP Address to 169.254.9.81 in both Processing and the Arduino Code. Load both up and I am able to successfully send Hello World across but no acknowledgement is received on the Processing side.
I recently updated my Mac to El Captain but I don't think that should have any effects.
Any help is appreciated as I am very new to this.
Thanks in advance!