diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 3e086f8..5519035 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -619,8 +619,8 @@
 #endif
 
 #ifdef CONFIG_SYSCTL
-extern ctl_table ipv6_route_table[];
-extern ctl_table ipv6_icmp_table[];
+extern ctl_table ipv6_route_table_template[];
+extern ctl_table ipv6_icmp_table_template[];
 
 extern int ipv6_sysctl_register(void);
 extern void ipv6_sysctl_unregister(void);
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 6f82046..58fbf30 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -5,6 +5,15 @@
 #ifndef __NETNS_IPV6_H__
 #define __NETNS_IPV6_H__
 
+struct ctl_table_header;
+
+struct netns_sysctl_ipv6 {
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *table;
+#endif
+};
+
 struct netns_ipv6 {
+	struct netns_sysctl_ipv6 sysctl;
 };
 #endif