https://devzone.nordicsemi.com/f/nordic-q-a/91543/nrf-connect-sdk-bluetooth-extend-advertsing-scanning-with-duplicate-filterHi， i&#39;m use latest ncs develop bluetooth extend advertising, and i&#39;m try use west build -t menuconfig to config scan filter config such as BT_CTLR_DUP_FILTER_LEN or BT_CTLR_DUP_FILTER_ADV_SET_MAX, but it didn&#39;t work. Dose this config used in softdeviceen-USTelligent Community 13Thu, 01 Sep 2022 11:04:39 GMThttps://devzone.nordicsemi.com/thread/384303?ContentTypeID=1Thu, 01 Sep 2022 11:04:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:53e24f35-9425-4c24-a1dc-1c9ee6e2d655Amanda Hsieh<p>Hi,&nbsp;</p> <p>Take a look at the <a href="http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_ble_controller.html#softdevice-controller">Limitations</a>:</p> <p>DRGN-8628: Setting Filter_Duplicates in LE Set Scan Enable and LE Set Extended Scan Enable commands does not take effect</p> <p>The host receives all advertisements from advertisers in advertising report events even if Filter_Duplicates is set in LE Set Scan Enable and LE Set Extended Scan Enable. Filter_Duplicates cannot guarantee that all duplicate advertising reports are filtered out, because the controller has a limited “cache” of known advertising reports.</p> <p><strong>Workaround:</strong><span>&nbsp;</span>Filter out the duplicate advertising reports in the application.</p> <p>Regards,<br />Amanda</p><div style="clear:both;"></div>