Objective: I used the Ethernet shield to send and receive the UDP packet, and would like to use the XBEE to send the UDP byte on air.\
The problem I found was that when the UDP packet was sent from a PC to the Arduino Ethernet shield,
I used the Serial to print out what it received, the first part of the UDP packet received was same to what the PC sent, but the latter part was not.
I am not sure if it is the problem of flow control or any other has the same experience with that?
I am using the UDP.cpp library which is included in the Arduino program.