diff --git a/lwip/lwip b/lwip/lwip
index 4caae2e..bb66be5 160000
--- a/lwip/lwip
+++ b/lwip/lwip
@@ -1 +1 @@
-Subproject commit 4caae2e4af10c7fbebf26d05c8263856dbc07ac7
+Subproject commit bb66be5a47e47faa4d3aa572299ceaac216de000