diff --git a/sys/net/if_dl.h b/sys/net/if_dl.h
--- a/sys/net/if_dl.h
+++ b/sys/net/if_dl.h
@@ -73,9 +73,10 @@
 #ifdef _KERNEL
 
 struct ifnet;
-struct sockaddr_dl *link_alloc_sdl(size_t, int);
+struct sockaddr_dl *link_alloc_sdl(size_t size, int flags);
 void link_free_sdl(struct sockaddr *sa);
-struct sockaddr_dl *link_init_sdl(struct ifnet *, struct sockaddr *, u_char);
+struct sockaddr_dl *link_init_sdl(struct ifnet *ifp, struct sockaddr *paddr,
+    u_char iftypes);
 
 #else /* !_KERNEL */