diff -Naur ppp-2.4.1/pppd/main.c ppp-2.4.1-p/pppd/main.c
--- ppp-2.4.1/pppd/main.c	Thu May 16 11:34:27 2002
+++ ppp-2.4.1-p/pppd/main.c	Thu May 16 11:36:43 2002
@@ -795,6 +795,11 @@
     if ((pidfile = fopen(pidfilename, "w")) != NULL) {
 	fprintf(pidfile, "%d\n", getpid());
 	(void) fclose(pidfile);
+	if (getuid() != geteuid()) {
+		if ((chown(pidfilename, getuid(), -1)) < 0) {
+			error("Failed to chown pid file %s: %m", pidfilename);
+		}
+	}
     } else {
 	error("Failed to create pid file %s: %m", pidfilename);
 	pidfilename[0] = 0;
@@ -816,6 +821,11 @@
 	if (ifname[0])
 	    fprintf(pidfile, "%s\n", ifname);
 	(void) fclose(pidfile);
+	if (getuid() != geteuid()) {
+		if ((chown(linkpidfile, getuid(), -1)) < 0) {
+			error("Failed to chown pid file %s: %m", linkpidfile);
+		}
+	}
     } else {
 	error("Failed to create pid file %s: %m", linkpidfile);
 	linkpidfile[0] = 0;