--- pppd/auth.c

+++ pppd/auth.c

@@ -546,6 +546,8 @@

     int unit;

 {

     char *msg;

+    if (phase == PHASE_DISCONNECT) /* we are called via link_terminated, must be ignored */

+       return;

     new_phase(PHASE_SERIALCONN);

@@ -658,6 +660,7 @@

 	the_channel->disconnect();

 	devfd = -1;

     }

+    /* not only disconnect, cleanup should also be called to close the devices */

     if (the_channel->cleanup)

 	(*the_channel->cleanup)();