diff --git a/arduino/libretuya/api/IPv6Address.cpp b/arduino/libretuya/libraries/NetUtils/IPv6Address.cpp
similarity index 100%
rename from arduino/libretuya/api/IPv6Address.cpp
rename to arduino/libretuya/libraries/NetUtils/IPv6Address.cpp
diff --git a/arduino/libretuya/api/IPv6Address.h b/arduino/libretuya/libraries/NetUtils/IPv6Address.h
similarity index 100%
rename from arduino/libretuya/api/IPv6Address.h
rename to arduino/libretuya/libraries/NetUtils/IPv6Address.h
diff --git a/arduino/libretuya/api/LwIPRxBuffer.cpp b/arduino/libretuya/libraries/NetUtils/LwIPRxBuffer.cpp
similarity index 100%
rename from arduino/libretuya/api/LwIPRxBuffer.cpp
rename to arduino/libretuya/libraries/NetUtils/LwIPRxBuffer.cpp
diff --git a/arduino/libretuya/api/LwIPRxBuffer.h b/arduino/libretuya/libraries/NetUtils/LwIPRxBuffer.h
similarity index 100%
rename from arduino/libretuya/api/LwIPRxBuffer.h
rename to arduino/libretuya/libraries/NetUtils/LwIPRxBuffer.h
diff --git a/arduino/libretuya/libraries/NetUtils/api/IPv6Address.h b/arduino/libretuya/libraries/NetUtils/api/IPv6Address.h
new file mode 100644
index 0000000..b7aa458
--- /dev/null
+++ b/arduino/libretuya/libraries/NetUtils/api/IPv6Address.h
@@ -0,0 +1,3 @@
+#pragma once
+
+#include "../IPv6Address.h"
diff --git a/arduino/realtek-ambz/libraries/WiFi/WiFiClient.h b/arduino/realtek-ambz/libraries/WiFi/WiFiClient.h
index 5dfdbf5..e1d264f 100644
--- a/arduino/realtek-ambz/libraries/WiFi/WiFiClient.h
+++ b/arduino/realtek-ambz/libraries/WiFi/WiFiClient.h
@@ -1,7 +1,7 @@
 #pragma once
 
-#include <api/LwIPRxBuffer.h>
 #include <api/WiFiClient.h>
+#include <LwIPRxBuffer.h>
 #include <memory>
 
 class SocketHandle;
diff --git a/builder/arduino-common.py b/builder/arduino-common.py
index 5185466..0141945 100644
--- a/builder/arduino-common.py
+++ b/builder/arduino-common.py
@@ -21,6 +21,7 @@ env.Prepend(
         join(LT_API_DIR, "compat"),
         join(LT_API_DIR, "libraries", "base64"),
         join(LT_API_DIR, "libraries", "HTTPClient"),
+        join(LT_API_DIR, "libraries", "NetUtils"),
         join(LT_API_DIR, "libraries", "WebServer"),
         join(LT_API_DIR, "libraries", "WiFiMulti"),
         # fmt: on