--- zzzz-none-000/linux-4.4.60/include/net/ip_tunnels.h	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/include/net/ip_tunnels.h	2018-11-08 13:36:17.000000000 +0000
@@ -372,4 +372,6 @@
 
 #endif /* CONFIG_INET */
 
+void ipip6_update_offload_stats(struct net_device *dev, void *ptr);
+void ip6_update_offload_stats(struct net_device *dev, void *ptr);
 #endif /* __NET_IP_TUNNELS_H */