listener = new CC2420PacketHandler(cpu);
listener.setOutput(context.out);
IEEE802154Handler ieeeHandler = new IEEE802154Handler();
listener.addUpperLayerHandler(0, ieeeHandler);
ieeeHandler.setLowerLayerHandler(listener);
ipStack = new IPStack();
byte[] macAddr = new byte[] {0x2,0x12,0x74,0x00,0x11,0x11,0x12,0x12};
ipStack.setLinkLayerAddress(macAddr);
ipStack.setRouter(true);
LoWPANHandler lowpanHandler = new LoWPANHandler();
lowpanHandler.setIPStack(ipStack);