From a9e73bc412b17d80d3b56887aa7e870c4ddf5fcd Mon Sep 17 00:00:00 2001
From: Simon Goldschmidt <goldsimon@gmx.de>
Date: Wed, 11 Dec 2019 20:43:28 +0100
Subject: [PATCH] ip6addr_aton: support scoped address strings (via '%')

See task #15393

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
---
 src/core/ipv6/ip6_addr.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/core/ipv6/ip6_addr.c b/src/core/ipv6/ip6_addr.c
index 687c02f7..6e0ac86b 100644
--- a/src/core/ipv6/ip6_addr.c
+++ b/src/core/ipv6/ip6_addr.c
@@ -46,6 +46,7 @@
 
 #include "lwip/ip_addr.h"
 #include "lwip/def.h"
+#include "lwip/netif.h"
 
 #include <string.h>
 
@@ -185,6 +186,17 @@ fix_byte_order_and_return:
     }
 
     ip6_addr_clear_zone(addr);
+#if LWIP_IPV6_SCOPES
+    if (*s == '%') {
+      const char *scopestr = s + 1;
+      if (*scopestr) {
+        struct netif *netif = netif_find(scopestr);
+        if (netif) {
+          ip6_addr_assign_zone(addr, IP6_UNKNOWN, netif);
+        }
+      }
+    }
+#endif
   }
 
   if (current_block_index != 7) {