diff --git a/src/include/lwip/ip6_addr.h b/src/include/lwip/ip6_addr.h
index 14d0f7c..1171df9 100644
--- a/src/include/lwip/ip6_addr.h
+++ b/src/include/lwip/ip6_addr.h
@@ -58,23 +58,8 @@
   u32_t addr[4];
 };
 
-/** This is the packed version of ip6_addr_t,
-    used in network headers that are itself packed */
-#ifdef PACK_STRUCT_USE_INCLUDES
-#  include "arch/bpstruct.h"
-#endif
-PACK_STRUCT_BEGIN
-struct ip6_addr_packed {
-  PACK_STRUCT_FIELD(u32_t addr[4]);
-} PACK_STRUCT_STRUCT;
-PACK_STRUCT_END
-#ifdef PACK_STRUCT_USE_INCLUDES
-#  include "arch/epstruct.h"
-#endif
-
 /** IPv6 address */
 typedef struct ip6_addr ip6_addr_t;
-typedef struct ip6_addr_packed ip6_addr_p_t;
 
 
 #if BYTE_ORDER == BIG_ENDIAN
diff --git a/src/include/lwip/prot/ip6.h b/src/include/lwip/prot/ip6.h
index 4e3ca37..6e1e263 100644
--- a/src/include/lwip/prot/ip6.h
+++ b/src/include/lwip/prot/ip6.h
@@ -43,6 +43,21 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+   
+/** This is the packed version of ip6_addr_t,
+    used in network headers that are itself packed */
+#ifdef PACK_STRUCT_USE_INCLUDES
+#  include "arch/bpstruct.h"
+#endif
+PACK_STRUCT_BEGIN
+struct ip6_addr_packed {
+  PACK_STRUCT_FIELD(u32_t addr[4]);
+} PACK_STRUCT_STRUCT;
+PACK_STRUCT_END
+#ifdef PACK_STRUCT_USE_INCLUDES
+#  include "arch/epstruct.h"
+#endif
+typedef struct ip6_addr_packed ip6_addr_p_t;
 
 #define IP6_HLEN 40
 
diff --git a/src/include/lwip/prot/mld6.h b/src/include/lwip/prot/mld6.h
index 2664829..be3a006 100644
--- a/src/include/lwip/prot/mld6.h
+++ b/src/include/lwip/prot/mld6.h
@@ -38,7 +38,7 @@
 #define LWIP_HDR_PROT_MLD6_H
 
 #include "lwip/arch.h"
-#include "lwip/ip6_addr.h"
+#include "lwip/prot/ip6.h"
 
 #ifdef __cplusplus
 extern "C" {