[E1 input] make sure config file with new E1 input config saves correctly
diff --git a/openbsc/src/e1_input_vty.c b/openbsc/src/e1_input_vty.c
index 6d44a95..b8050a8 100644
--- a/openbsc/src/e1_input_vty.c
+++ b/openbsc/src/e1_input_vty.c
@@ -38,7 +38,7 @@
 
 #include "../bscconfig.h"
 
-#define E1_DRIVER_NAMES		"(misdn)"
+#define E1_DRIVER_NAMES		"(misdn|misdn)"
 #define E1_DRIVER_HELP		"mISDN supported E1 Card\n"
 
 DEFUN(cfg_e1line_driver, cfg_e1_line_driver_cmd,
@@ -76,6 +76,8 @@
 {
 	struct e1inp_line *line;
 
+	vty_out(vty, "e1_input%s", VTY_NEWLINE);
+
 	llist_for_each_entry(line, &e1inp_line_list, list) {
 		vty_out(vty, " e1_line %u driver %s%s", line->num,
 			line->driver->name, VTY_NEWLINE);