diff --git a/components/lwip/Kconfig b/components/lwip/Kconfig
index 6b6bdc0d6..ccf84731b 100644
--- a/components/lwip/Kconfig
+++ b/components/lwip/Kconfig
@@ -85,7 +85,7 @@ config LWIP_DHCP_MAX_NTP_SERVERS
 
 config LWIP_IP_FRAG
     bool "Enable fragment outgoing IP packets"
-    default n
+    default y
     help
         Enabling this option allows fragmenting outgoing IP packets if their size
         exceeds MTU.
diff --git a/components/lwip/lwip b/components/lwip/lwip
index 5d80af7d5..39f338547 160000
--- a/components/lwip/lwip
+++ b/components/lwip/lwip
@@ -1 +1 @@
-Subproject commit 5d80af7d59c10b7890f0fc862e4efe807ce5fb73
+Subproject commit 39f338547ab344e855f94eb922421036bee8e417