diff --git a/contrib/lwip b/contrib/lwip
index 5135653..cfd34e0 160000
--- a/contrib/lwip
+++ b/contrib/lwip
@@ -1 +1 @@
-Subproject commit 5135653e68b095ba2cae63a965a55928eb5c4223
+Subproject commit cfd34e0e06e43158153bbab5206d8c3dddde681e