--- ppp-2.4.2/pppd/sys-linux.c.alt-hangup-hack	2006-09-19 17:53:57 +0400
+++ ppp-2.4.2/pppd/sys-linux.c	2006-09-19 18:14:08 +0400
@@ -556,14 +556,14 @@ int generic_establish_ppp (int fd)
 
 void tty_disestablish_ppp(int tty_fd)
 {
-    if (!hungup) {
 /*
  * Flush the tty output buffer so that the TIOCSETD doesn't hang.
  */
 	if (tcflush(tty_fd, TCIOFLUSH) < 0)
 	{
 	    warn("tcflush failed: %m");
-	    goto flushfailed;
+	    if (!hungup)
+		goto flushfailed;
 	}
 /*
  * Restore the previous line discipline
@@ -583,7 +583,6 @@ void tty_disestablish_ppp(int tty_fd)
 	    if ( ! ok_error (errno))
 		warn("Couldn't restore device fd flags: %m");
 	}
-    }
 flushfailed:
     initfdflags = -1;