diff -ruN ppp-2.4.4.orig/pppd/cbcp.c ppp-2.4.4/pppd/cbcp.c
--- ppp-2.4.4.orig/pppd/cbcp.c	2007-05-12 11:40:48 +0000
+++ ppp-2.4.4/pppd/cbcp.c	2007-05-12 15:30:59 +0000
@@ -589,6 +589,9 @@
     else
 	us->us_allowed = ( 1 << CB_CONF_USER );
 
+    /* We always accept no callback users */	
+    us->us_allowed |= ( 1 << CB_CONF_NO );
+    
     if (cbcp_init_hook)
 	cbcp_init_hook( us );
 
@@ -764,7 +767,7 @@
     if (cb_type == (1 << CB_CONF_NO )) {
 	dbglog("cbcp_sendack CONF_NO");
 	PUTCHAR(CB_CONF_NO, bufp);
-	len = 3;
+	len = 2;
 	PUTCHAR(len , bufp);
 	PUTCHAR(0, bufp);
 	cbcp_send(us, CBCP_ACK, buf, len);
diff -ruN ppp-2.4.4.orig/pppd/main.c ppp-2.4.4/pppd/main.c
--- ppp-2.4.4.orig/pppd/main.c	2007-05-12 11:40:48 +0000
+++ ppp-2.4.4/pppd/main.c	2007-05-12 15:20:00 +0000
@@ -568,7 +568,8 @@
 	if (callback_in_progress){
 	    connector = NULL;
 	    cbcp_stop();
-	    remove_fd(fd_ppp);
+	    if (fd_ppp != -1) 
+		remove_fd(fd_ppp);
 	    clean_check();
 	    the_channel->disestablish_ppp(devfd);
 	    fd_ppp = -1;