diff --git a/custom_components/xiaomi_home/miot/miot_network.py b/custom_components/xiaomi_home/miot/miot_network.py
index 45b5f35..58751cc 100644
--- a/custom_components/xiaomi_home/miot/miot_network.py
+++ b/custom_components/xiaomi_home/miot/miot_network.py
@@ -94,7 +94,7 @@ class MIoTNetwork:
     _main_loop: asyncio.AbstractEventLoop
 
     _ip_addr_map: dict[str, float]
-    _url_addr_list: dict[str, float]
+    _http_addr_map: dict[str, float]
     _http_session: aiohttp.ClientSession
 
     _refresh_interval: int
@@ -283,8 +283,8 @@ class MIoTNetwork:
                     [
                         'ping', '-c', '1', '-w',
                         str(self._DETECT_TIMEOUT), address]),
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE
+                stdout=subprocess.DEVNULL,
+                stderr=subprocess.DEVNULL
             )
             await process.communicate()
             if process.returncode == 0:
diff --git a/test/test_lan.py b/test/test_lan.py
index a2861cc..42b0b49 100755
--- a/test/test_lan.py
+++ b/test/test_lan.py
@@ -56,7 +56,7 @@ async def test_lan_async(test_devices: dict):
 
     # Your central hub gateway did
     test_did = '111111'
-    # Your central hub gateway did
+    # Your central hub gateway token
     test_token = '11223344556677d9a03d43936fc384205'
     test_model = 'xiaomi.gateway.hub1'
     # Your computer interface list, such as enp3s0, wlp5s0
@@ -152,3 +152,5 @@ async def test_lan_async(test_devices: dict):
     await asyncio.sleep(0.2)
 
     await miot_lan.deinit_async()
+    await mips_service.deinit_async()
+    await miot_network.deinit_async()