https://devzone.nordicsemi.com/f/nordic-q-a/8972/fail-to-ping-iot-device-s-global-ipv6-addressI am working on nrf51 iot sdk. I have created a IPv6 tunnel in HE and is able to ping the gateway as follows: root@raspberrypi:/home/pi# ping6 2001:xxx:18:xxx::1 PING 2001:xxx:18:xxx::1(2001:xxx:18:xxx::1) 56 data bytes 64 bytes from 2001:xxx:18en-USTelligent Community 13Wed, 23 Sep 2015 09:33:57 GMThttps://devzone.nordicsemi.com/thread/33024?ContentTypeID=1Wed, 23 Sep 2015 09:33:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6459fe2-6922-4f10-979e-ea8a31d0dea4Max<p>It works after I add the global ipv6 to bt0. Thank you very much.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/33023?ContentTypeID=1Wed, 23 Sep 2015 09:05:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a0dcb6f2-2514-41e3-bac8-11381823b6e1Stian R&#248;ed Hafskjold<p>Can you please post the output of ifconfig? Did you add a global ip to the bt0 interface? (i.e. <code>ifconfig -a bt0 add 2001:xxx:19:xxx::1/64</code>)</p><div style="clear:both;"></div>