hnb-test: request Iu Release, handle Iu Release Command
diff --git a/src/tests/hnb-test-layers.h b/src/tests/hnb-test-layers.h
index 7ab273a..ab51ca9 100644
--- a/src/tests/hnb-test-layers.h
+++ b/src/tests/hnb-test-layers.h
@@ -14,3 +14,4 @@
 /* RANAP calls main with actual payload*/
 void hnb_test_nas_rx_dtap(struct hnb_test *hnb, void *data, int len);
 void hnb_test_rx_secmode_cmd(struct hnb_test *hnb, long ip_alg);
+void hnb_test_rx_iu_release(struct hnb_test *hnb);