diff --git a/VERSION b/VERSION
index c28004fc..43880ecd 100755
--- a/VERSION
+++ b/VERSION
@@ -18,5 +18,5 @@ phy:
 gitlab:
     driver      :   32124083
     json        :   1ee88246
-    lwip        :   4516ac7c
+    lwip        :   ffc37ff3
     mbedtls     :   78497e12
diff --git a/lib/liblwip.a b/lib/liblwip.a
index c453ea18..caf179d3 100755
Binary files a/lib/liblwip.a and b/lib/liblwip.a differ
diff --git a/third_party/include/lwipopts.h b/third_party/include/lwipopts.h
index 0a0fcfcf..e77dd404 100644
--- a/third_party/include/lwipopts.h
+++ b/third_party/include/lwipopts.h
@@ -447,7 +447,7 @@
  * Also notice that this slows down input processing of every IP packet!
  */
 #ifndef ETHARP_TRUST_IP_MAC
-#define ETHARP_TRUST_IP_MAC             1
+#define ETHARP_TRUST_IP_MAC             0
 #endif
 
 /**