From 967d4fc3b0eefdabf1f38747db4b87d2956fdf57 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Wed, 22 Mar 2017 22:33:23 +0100
Subject: [PATCH] LWIP_ALTCP: default to off for maximum backwards
 compatibility...

---
 src/include/lwip/opt.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index e9df7c72..83155a0c 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -1362,7 +1362,7 @@
  * tcp callback API for LWIP_ALTCP==0, but then cannot use layered protocols.
  */
 #ifndef LWIP_ALTCP
-#define LWIP_ALTCP                      (LWIP_TCP && LWIP_CALLBACK_API)
+#define LWIP_ALTCP                      0
 #endif
 /**
  * @}