I am using LPC1768 from NXP. my application is to send and receive data via ethernet interface. I am using DP83848 as phy chip. I have used BSD server example code and customize it for my project. I am using retv function and able to send data from PC to microcontroller and perform required operations. But for sending data from microcontroller to PC I am using inbuilt send function in BSD server example, but I am not able to see any activity in Wireshark. I guess socket itself not getting created while sending. Need help to resolve. dbuf is the buffer storing received commands and same buffer for sending. Can you help me with some example on the flow how to write the code or any settings I need to change in bsd server example to enable send function.