https://devzone.nordicsemi.com/f/nordic-q-a/16052/how-to-use-whitelist-only-for-scan-requestsAccording to this advertising blog: &quot;The advertiser can use a whitelist to limit the interaction to a number of scanner/central device. The whitelist contains an array of the peer device addresses or IRK numbers (when central use resolvable random addressen-USTelligent Community 13Mon, 29 Aug 2016 08:01:43 GMThttps://devzone.nordicsemi.com/thread/61211?ContentTypeID=1Mon, 29 Aug 2016 08:01:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5137dc85-870f-498e-a4e2-03dbc7a75f47David Edwin<p>The scan response is in response to a scan request. An advertiser can only filter on scan request and connect request as these are transmitted from the scanner device.</p> <p>I assume you want to respond to all connect requests but you only want to respond to scan requests in the whitelist.</p> <p>What is the behavior that you see when using the BLE_GAP_ADV_FP_FILTER_SCANREQ ? Suggest that you try it out and provide details.</p><div style="clear:both;"></div>