https://devzone.nordicsemi.com/f/nordic-q-a/44384/managing-a-ble-thread-application-with-unknown-ipv6-addressesHello I have 3 nodes, 2 Thread CoAP servers and 1 BLE/Thread Coap client. Let&#39;s call them THnode1, THnode2 and BLE_THnode0. I do not know the IP addresses of any node, but I would like to send messages to a specific node with a BLE interface usingen-USTelligent Community 13Wed, 20 Mar 2019 07:59:48 GMThttps://devzone.nordicsemi.com/thread/177229?ContentTypeID=1Wed, 20 Mar 2019 07:59:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7c454533-e42c-49d6-94d8-07f772c3de36Lukasz Duda<p>Hello Simon,</p> <p>First of all, thank you for using nRF5 SDK for Thread and Zigbee!</p> <p>Thread protocol does not define any application layer and so it does not provide a way to discover addresses by embedded mechanisms.<br />At the same time, Thread allows implementing any IPv6 based protocols on top.</p> <p>Unfortunately, in our SDK, we don&#39;t provide an example of such a dedicated protocol e.g. DNS Server or mDNS.</p> <p>OpenThread API exposes UDP Socket API so you can try to implement or port existing DNS-like protocol (e.g. mDNS). Alternatively, you can check out our CoAP examples where we do proprietary address discovery based on CoAP queries (for provisioning purposes).</p> <p>Regards,<br />Łukasz</p> <p></p><div style="clear:both;"></div>