From ae1660c4369036ababf13d0b3704e82105c40e79 Mon Sep 17 00:00:00 2001
From: Sukchan Lee <acetcom@gmail.com>
Date: Sun, 15 Apr 2018 18:37:45 +0900
Subject: [PATCH] add warning

---
 src/mme/mme_sm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mme/mme_sm.c b/src/mme/mme_sm.c
index de4821661..05e122435 100644
--- a/src/mme/mme_sm.c
+++ b/src/mme/mme_sm.c
@@ -413,6 +413,7 @@ void mme_state_operational(fsm_t *s, event_t *e)
                     ESM_CAUSE_PROTOCOL_ERROR_UNSPECIFIED);
                 d_assert(rv == CORE_OK,,
                         "nas_send_attach_reject failed");
+                d_warn("EMM_CAUSE : IMSI Unknown in HSS");
 
                 enb_ue = mme_ue->enb_ue;
                 d_assert(enb_ue, break, "No ENB UE context");