https://devzone.nordicsemi.com/f/nordic-q-a/30478/6lowpan-with-mqtt-on-nrf52dk-how-to-connectHi, I&#39;m on nrf52dk platform. I have flashed the MQTT publisher firmware in IOT section provided in nRF5 SDK 14.2, config the ip address and auth info in code; established a border router according to https://devzone.nordicsemi.com/b/blog/posts/6lowpanen-USTelligent Community 13Thu, 15 Feb 2018 08:43:36 GMThttps://devzone.nordicsemi.com/thread/120937?ContentTypeID=1Thu, 15 Feb 2018 08:43:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3bfaa402-bf84-4551-9ace-711e4182adceH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>I suspect that you haven&#39;t bridged your interfaces properly. As you indicate, radvd is deprecated (functionality is integrated into the native LEDE/openWRT stack), and you&#39;ll need to bridge the bt0 interface in order to get mqtt working properly.</p> <p>There&#39;s two blog posts here on how to set this up with OpenWRT 15.05:</p> <p><a href="https://devzone.nordicsemi.com/b/blog/posts/openwrt-series-1-setting-up-tp-link-wdr4300-or-n75">https://devzone.nordicsemi.com/b/blog/posts/openwrt-series-1-setting-up-tp-link-wdr4300-or-n75</a>&nbsp;&lt;--- Sections 3 and 4 are relevant for you</p> <p><a href="https://devzone.nordicsemi.com/b/blog/posts/trying-openwrt-chaos-calmer-1505-rc1-on-raspberry-">https://devzone.nordicsemi.com/b/blog/posts/trying-openwrt-chaos-calmer-1505-rc1-on-raspberry-</a></p> <p></p> <p>Could you try this and see if you&#39;re able to get it working?</p> <p></p> <p>Cheers,</p> <p>Håkon</p><div style="clear:both;"></div>