The Pinoccio web pages say that the Atmel AtMega128RFA1 supports full mesh networking or ZigBee-like PAN topology. If I'm not wrong, ZigBee network stack has not been implemented but some kind of network stack with mesh capability has been implemented. The Physical Layer (PHY) and Medium Access Control Layer (MAC) is defined by 802.15.4. How is the Network layer, Application Support Sublayer (APS) and Application Layer (APL) implemented? Who is providing this stack?