--- ppp/pppd/plugins/pppoatm.c~	2003-07-19 15:35:24.000000000 +0200
+++ ppp/pppd/plugins/pppoatm.c	2003-07-19 15:42:26.000000000 +0200
@@ -32,6 +32,7 @@
 static bool vc_encaps = 0;
 static int device_got_set = 0;
 static int pppoatm_max_mtu, pppoatm_max_mru;
+static int pppoatmfd = -1;
 static int setdevname_pppoatm(const char *cp, const char **argv, int doit);
 struct channel pppoa_channel;
 
@@ -173,9 +174,16 @@
 	pppoatm_max_mru = lcp_wantoptions[0].mru;
 	set_line_discipline_pppoatm(fd);
 	strlcpy(ppp_devnam, devnam, sizeof(ppp_devnam));
+	pppoatmfd = fd; /* need to save it for disconnect */
 	return fd;
 }
 
+static void disconnect_pppoatm(void)
+{
+	close(pppoatmfd);
+	pppoatmfd = -1;
+}
+
 static void send_config_pppoa(int mtu,
 			      u_int32_t asyncmap,
 			      int pcomp,
@@ -222,7 +230,7 @@
     process_extra_options: NULL,
     check_options: NULL,
     connect: &connect_pppoatm,
-    disconnect: NULL,
+    disconnect: &disconnect_pppoatm,
     establish_ppp: &generic_establish_ppp,
     disestablish_ppp: &generic_disestablish_ppp,
     send_config: &send_config_pppoa,