From d6b5b5222f2db5d953bd26487fcbc2e0628d531f Mon Sep 17 00:00:00 2001
From: Simon Goldschmidt <goldsimon@gmx.de>
Date: Sun, 12 Jan 2020 20:34:18 +0100
Subject: [PATCH] opt: make LWIP_IPV6_SEND_ROUTER_SOLICIT default to LWIP_IPV6

This ensures struct netif doesn't contain 'rs_count' if LWIP_IPV6
is disabled but LWIP_IPV6_SEND_ROUTER_SOLICIT is at its default.

See bug #56509
---
 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 488adf63..f398292d 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -2494,7 +2494,7 @@
  * network startup.
  */
 #if !defined LWIP_IPV6_SEND_ROUTER_SOLICIT || defined __DOXYGEN__
-#define LWIP_IPV6_SEND_ROUTER_SOLICIT   1
+#define LWIP_IPV6_SEND_ROUTER_SOLICIT   LWIP_IPV6
 #endif
 
 /**