diff --git a/homeassistant/components/device_tracker/luci.py b/homeassistant/components/device_tracker/luci.py
index 9ed73f21375..9dbf503fc94 100644
--- a/homeassistant/components/device_tracker/luci.py
+++ b/homeassistant/components/device_tracker/luci.py
@@ -101,7 +101,12 @@ class LuciDeviceScanner(object):
             result = _req_json_rpc(url, 'net.arptable',
                                    params={'auth': self.token})
             if result:
-                self.last_results = [x['HW address'] for x in result]
+                self.last_results = []
+                for device_entry in result:
+                    # Check if the Flags for each device contain
+                    # NUD_REACHABLE and if so, add it to last_results
+                    if int(device_entry['Flags'], 16) & 0x2:
+                        self.last_results.append(device_entry['HW address'])
 
                 return True