about coap testing plese help me

[her0gyu]

I'm concentrating on a work about connecting nrf51-dk device in the sensor node end implementing COAP server, ble enabled rapsberrypi and COAP client using Copper. To check connection, I followed nrf sdk 0.9 user guide and I got stucked with at some point. When copper ping to the nrf-dk device which get a global ipv6 address, it doesn't get ping response. when I ping in the raspberry pi to the nrf-dk, it work. I think on the external network, it doesn't know about the nrf51-dk network address, So I must implement the raspberry-pi as a real router using some method as well as nrf51sdk usr guide implementation. Is my suggestion right?? If so, how I make raspberry-pi forward packet to external network?? plz help me!!

[her0gyu]

My network is composed of nrf51-dk(with heartbeat sensor) -- raspberrypi -- end user(using copper) I referced it from the nrf-sdk getting started part (located at developer.nordicsemi.com/.../index.html) I followed this tutorial , but blocked from connecting copper to nrf51-dk sensor node, I have continued since I posted question, so My project improve, So I assign global address (ipv6) to nrf51-dk and can be connected to raspberry-pi, but at the end user(using copper) ping doesn't work, but in rpi ping works to the nrf51-dk. So I conclude that the router which I use not supports ipv6 so when the end user ping to the nrf51-dk router dosen't know the existence of nrf51-dk and rpi bluetooth interface. Am I right??