Techniques are described herein to cause a Master and Slave Wireless Personal Area Network (WPAN) to share the same 64-bit Extended Unique Identifier (EUI64) address. In response, the first hop dual-phy node transmits most of the upward data flow to the router via the Radio Frequency (RF) link, and the router transmits most downward data flow via the RF link. Because the RF link has much more bandwidth than the Power Line Communication (PLC) link, this mechanism takes full advantage of network resources and extends the network throughput