nat: Provide a USSD access list to check for which to play HLR.
diff --git a/openbsc/src/nat/bsc_nat_vty.c b/openbsc/src/nat/bsc_nat_vty.c
index 9822e5c..de58bba 100644
--- a/openbsc/src/nat/bsc_nat_vty.c
+++ b/openbsc/src/nat/bsc_nat_vty.c
@@ -78,6 +78,8 @@
 	vty_out(vty, " ip-dscp %d%s", _nat->bsc_ip_dscp, VTY_NEWLINE);
 	if (_nat->acc_lst_name)
 		vty_out(vty, " access-list-name %s%s", _nat->acc_lst_name, VTY_NEWLINE);
+	if (_nat->ussd_lst_name)
+		vty_out(vty, " ussd-list-name %s%s", _nat->ussd_lst_name, VTY_NEWLINE);
 
 	llist_for_each_entry(lst, &_nat->access_lists, list) {
 		write_acc_lst(vty, lst);
@@ -395,6 +397,18 @@
 	return CMD_SUCCESS;
 }
 
+DEFUN(cfg_nat_ussd_lst_name,
+      cfg_nat_ussd_lst_name_cmd,
+      "ussd-list-name NAME",
+      "Set the name of the access list to check for IMSIs for USSD message\n"
+      "The name of the access list for HLR USSD handling")
+{
+	if (_nat->ussd_lst_name)
+		talloc_free(_nat->ussd_lst_name);
+	_nat->ussd_lst_name = talloc_strdup(_nat, argv[0]);
+	return CMD_SUCCESS;
+}
+
 /* per BSC configuration */
 DEFUN(cfg_bsc, cfg_bsc_cmd, "bsc BSC_NR", "Select a BSC to configure")
 {
@@ -632,6 +646,7 @@
 	install_element(NAT_NODE, &cfg_nat_bsc_ip_dscp_cmd);
 	install_element(NAT_NODE, &cfg_nat_bsc_ip_tos_cmd);
 	install_element(NAT_NODE, &cfg_nat_acc_lst_name_cmd);
+	install_element(NAT_NODE, &cfg_nat_ussd_lst_name_cmd);
 
 	/* access-list */
 	install_element(NAT_NODE, &cfg_lst_imsi_allow_cmd);