--- pppd/tty.c.orig	2007-05-08 04:04:46 +0500
+++ pppd/tty.c	2007-05-08 04:05:25 +0500
@@ -548,6 +548,8 @@
 		locked = 1;
 	}
 
+    setup_serial(connector);
+
 	/*
 	 * If the pty, socket, notty and/or record option was specified,
 	 * start up the character shunt now.