diff --git a/components/lwip/lwip b/components/lwip/lwip
index 99d992cac..21a1fcb2a 160000
--- a/components/lwip/lwip
+++ b/components/lwip/lwip
@@ -1 +1 @@
-Subproject commit 99d992cac3e9d7614ba30ac75f6df35adb59f2e1
+Subproject commit 21a1fcb2aebaaae63d87dfeceaff03dc0bae6374