fix(nimble): Fixed authcomplete failure caused by a mismatch in the c1 value

nimble/host/src/ble_hs_hci_evt.c

@@ -187,6 +187,8 @@ ble_hs_hci_evt_dispatch_find(uint8_t event_code)
     return NULL;
 }
 
+static const uint8_t ble_hs_conn_null_addr[6];
+
 static ble_hs_hci_evt_le_fn *
 ble_hs_hci_evt_le_dispatch_find(uint8_t event_code)
 {
@@ -457,7 +459,7 @@ ble_hs_hci_evt_le_enh_conn_complete(uint8_t subevent, const void *data,
 #if MYNEWT_VAL(BLE_HOST_BASED_PRIVACY)
         /* RPA needs to be resolved here, as controller is not aware of the
          * address is RPA in Host based RPA  */
-        if (ble_host_rpa_enabled()) {
+        if (ble_host_rpa_enabled() && !memcmp(evt.local_rpa, ble_hs_conn_null_addr, 6) == 0) {
             uint8_t *local_id_rpa = ble_hs_get_rpa_local();
             memcpy(evt.local_rpa, local_id_rpa, BLE_DEV_ADDR_LEN);
         }