diff --git a/src/libmsc/msc_vty.c b/src/libmsc/msc_vty.c
index d070b4de9..14ad19ec1 100644
--- a/src/libmsc/msc_vty.c
+++ b/src/libmsc/msc_vty.c
@@ -151,6 +151,8 @@ static int config_write_net(struct vty *vty)
 	vty_out(vty, " location updating reject cause %u%s",
 		gsmnet->reject_cause, VTY_NEWLINE);
 	vty_out(vty, " encryption a5 %u%s", gsmnet->a5_encryption, VTY_NEWLINE);
+	vty_out(vty, " authentication %s%s",
+		gsmnet->authentication_required ? "required" : "optional", VTY_NEWLINE);
 	vty_out(vty, " rrlp mode %s%s", rrlp_mode_name(gsmnet->rrlp.mode),
 		VTY_NEWLINE);
 	vty_out(vty, " mm info %u%s", gsmnet->send_mm_info, VTY_NEWLINE);