--- zzzz-none-000/linux-4.4.60/include/net/addrconf.h	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/include/net/addrconf.h	2018-11-08 13:36:17.000000000 +0000
@@ -43,7 +43,7 @@
 	__be32			reserved2;
 
 	struct in6_addr		prefix;
-};
+} __attribute__((packed, aligned(2)));
 
 
 #include <linux/netdevice.h>
@@ -385,6 +385,9 @@
 #endif
 }
 
+struct net_device *ipv6_dev_find(struct net *net, struct in6_addr *addr,
+				 int strict);
+
 #ifdef CONFIG_PROC_FS
 int if6_proc_init(void);
 void if6_proc_exit(void);