diff -up ppp-2.4.5/pppd/utils.c.lock ppp-2.4.5/pppd/utils.c
--- ppp-2.4.5/pppd/utils.c.lock 2011-05-30 15:30:36.432371849 +0200
+++ ppp-2.4.5/pppd/utils.c 2011-05-30 15:30:48.575495854 +0200
@@ -859,7 +859,7 @@ complete_read(int fd, void *buf, size_t
/* Procedures for locking the serial device using a lock file. */
#ifndef LOCK_DIR
#ifdef __linux__
-#define LOCK_DIR "/var/lock"
+#define LOCK_DIR "/var/lock/ppp"
#else
#ifdef SVR4
#define LOCK_DIR "/var/spool/locks"