From fd8a7666c863ea0ddb03dc1b6f83265632a8c67c Mon Sep 17 00:00:00 2001
From: Piyush Shah <piyush@espressif.com>
Date: Thu, 12 Jul 2018 15:18:51 +0530
Subject: [PATCH] LWIP AutoIP Compilation Fixed by defining IP_IS_V4_VAL()

---
 components/lwip/include/lwip/lwip/ip_addr.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/lwip/include/lwip/lwip/ip_addr.h b/components/lwip/include/lwip/lwip/ip_addr.h
index 74897a9ee..5928f7eb2 100644
--- a/components/lwip/include/lwip/lwip/ip_addr.h
+++ b/components/lwip/include/lwip/lwip/ip_addr.h
@@ -47,6 +47,8 @@ extern "C" {
 #define IPADDR_TYPE_V6                6U
 #define IPADDR_TYPE_ANY               46U
 
+#define IP_IS_V4_VAL(ipaddr)   (IP_GET_TYPE(&ipaddr) == IPADDR_TYPE_V4)
+
 #if LWIP_IPV4 && LWIP_IPV6
 /** A union struct for both IP version's addresses.
  * ATTENTION: watch out for its size when adding IPv6 address scope!