Determine XBee Packet Route I am trying to build a ZigBee network using XBee Pro S2 devices (API Mode).
Setting up the network and sending packets is easy enough.

Is it possible to trace the route a packet travelled from the end-device to the coordinator? 

Example: 
I have 2 routers, one in area A connected to the coordinator, and the other in area B connected to the router in area A. End-device enters area B, and transmits a packet to the coordinator. Path: end-device->routerB->routerA->Coordinator. 
Is it possible to know the end-device is in area B as it is the first router device the packet travelled through?
It is done by using Source Routing

The 16-bit addresses of the hopped devices are added to the RF payload space, thus it will reduce the number of bytes that can be sent in one RF packet.