-void lcp_input __P((int, u_char *, int));
-void lcp_protrej __P((int));
-void lcp_sprotrej __P((int, u_char *, int));
-int lcp_printpkt __P((u_char *, int,
- void (*) __P((void *, char *, ...)), void *));
+void lcp_sprotrej __P((int, u_char *, int)); /* send protocol reject */
+
+extern struct protent lcp_protent;