-struct in_addr in_makeaddr();
-u_long in_netof(), in_lnaof();
-#endif
+/* From in.c: */
+extern struct in_addr in_makeaddr(u_long, u_long);
+extern u_long in_netof(struct in_addr);
+extern void in_sockmaskof(struct in_addr, struct sockaddr_in *);
+extern u_long in_lnaof(struct in_addr);
+extern int in_localaddr(struct in_addr);
+extern int in_canforward(struct in_addr);
+struct socket; struct ifnet;
+extern int in_control(struct socket *, int, caddr_t, struct ifnet *);
+struct in_ifaddr;
+extern int in_broadcast(struct in_addr);
+
+#endif /* KERNEL */
+
+#endif /* _NETINET_IN_H_ */