vlr: optionally send IMEI early to HLR

When 'check-imei-rqd 1 early' is set in the config, send the IMEI to
the HLR before doing the location update with the HLR.

The OsmoHLR documentation referenced in the code will be added in
osmo-hlr.git's Change-Id I2dd4a56f7b8be8b5d0e6fc32e04459e5e278d0a9.

Related: OS#2542
Change-Id: I88283cad23793b475445d814ff49db534cb41244
diff --git a/tests/msc_vlr/msc_vlr_test_no_authen.err b/tests/msc_vlr/msc_vlr_test_no_authen.err
index a048215..b6c0698 100644
--- a/tests/msc_vlr/msc_vlr_test_no_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_no_authen.err
@@ -30,6 +30,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()
@@ -477,6 +478,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()
@@ -909,6 +911,7 @@
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 - _lu_fsm_associate_vsub: now used by 2 (attached,active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()
@@ -1155,6 +1158,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()
@@ -1404,6 +1408,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()
@@ -1704,6 +1709,7 @@
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_ciph()
@@ -1914,7 +1920,7 @@
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - mm_rx_loc_upd_req: now used by 2 (rx_from_ms,lu)
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
-- MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
+- MS replies with an Identity Response, causes an early GSUP Check IMEI request to HLR
   MSC <--GERAN-A-- MS: GSM48_MT_MM_ID_RESP
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
@@ -1923,22 +1929,31 @@
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_auth()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_ciph()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node_4()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: state_chg to VLR_ULA_S_WAIT_HLR_UPD
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1_pre()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: state_chg to VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY
+GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
+DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
+- Subscriber has the IMEISV from the ID Response
+DREF VLR subscr IMSI-901700000004620 + test_no_authen_imeisv_imei: now used by 2 (active-conn,test_no_authen_imeisv_imei)
+  strcmp(vsub->imeisv, "4234234234234275") == 0
+DREF VLR subscr IMSI-901700000004620 - test_no_authen_imeisv_imei: now used by 1 (active-conn)
+- HLR accepts the IMEI, VLR responds with LU Request
+<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: 32010809710000004026f05101000a0101
+DREF VLR subscr IMSI-901700000004620 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: Received Event VLR_ULA_E_HLR_IMEI_ACK
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_node1()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_post_auth()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_post_ciph()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_node_4()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: state_chg to VLR_ULA_S_WAIT_HLR_UPD
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: Allocated
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: is child of vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU)
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: Received Event UPD_HLR_VLR_E_START
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f02801020a0101
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
+DREF VLR subscr IMSI-901700000004620 - vlr_gsup_rx: now used by 1 (active-conn)
+<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
-- Subscriber has the IMEISV from the ID Response
-DREF VLR subscr IMSI-901700000004620 + test_no_authen_imeisv_imei: now used by 2 (active-conn,test_no_authen_imeisv_imei)
-  strcmp(vsub->imeisv, "4234234234234275") == 0
-DREF VLR subscr IMSI-901700000004620 - test_no_authen_imeisv_imei: now used by 1 (active-conn)
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000004026f00804036470f10a0101
 DREF VLR subscr IMSI-901700000004620 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
@@ -1968,7 +1983,7 @@
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: SMS:0x01
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
   lu_result_sent == 0
-- HLR also sends GSUP _UPDATE_LOCATION_RESULT, and we send an ID Request for the IMEI to the MS
+- HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f00a0101
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
@@ -1983,58 +1998,13 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_INIT}: Received Event LU_COMPL_VLR_E_START
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI
-DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN encode: DTAP on GERAN-A
-- DTAP --GERAN-A--> MS: GSM48_MT_MM_ID_REQ: 051802
-- DTAP matches expected message
-DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
-DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - vlr_gsup_rx: now used by 1 (active-conn)
-<-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
-- We will only do business when the IMEI is known
-  llist_count(&msub_list) == 1
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + test_no_authen_imeisv_imei: now used by 2 (active-conn,test_no_authen_imeisv_imei)
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - test_no_authen_imeisv_imei: now used by 1 (active-conn)
-msc_a_is_accepted() == false
-  requests shall be thwarted
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: CC GSM48_MT_CC_SETUP
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: GSM48_MT_CC_SETUP
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM unknown 0x33
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: unknown 0x33
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: RR GSM48_MT_RR_SYSINFO_1
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: SMS SMS:0x01
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: SMS:0x01
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-- MS replies with an Identity Response, VLR sends the IMEI to HLR
-  MSC <--GERAN-A-- MS: GSM48_MT_MM_ID_RESP
-DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
-DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
-DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
-GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
-DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
-- HLR accepts the IMEI
-<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: 32010809710000004026f05101000a0101
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
-DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_HLR_IMEI_ACK
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_IMEI}: Received Event LU_COMPL_VLR_E_IMEI_CHECK_ACK
 - sending LU Accept for IMSI-901700000004620:MSISDN-46071:GERAN-A:LU
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + attached: now used by 3 (active-conn,vlr_gsup_rx,attached)
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_IMEI}: state_chg to LU_COMPL_VLR_S_DONE
+DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
+DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_DONE}: Terminating in cascade, depth 2 (cause = OSMO_FSM_TERM_PARENT, caused by: upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU))
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_DONE}: Removing from parent vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU)
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_DONE}: Deallocated
+DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_DONE}: Deferring: will deallocate with upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU)
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: state_chg to VLR_ULA_S_DONE
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Received Event MSC_A_EV_AUTHENTICATED
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: state_chg to MSC_A_ST_AUTHENTICATED
@@ -2049,9 +2019,9 @@
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_RELEASING}: RAN encode: CLEAR_COMMAND on GERAN-A
 DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - msc_a_fsm_releasing_onenter: now used by 3 (active-conn,vlr_gsup_rx,attached)
+DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_DONE}: Deallocated, including all deferred deallocations
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - vlr_gsup_rx: now used by 2 (active-conn,attached)
-<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: vlr_gsupc_read_cb() returns 0
-  bssap_clear_sent == 1
+<-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 - LU was successful, and the conn has already been closed
   lu_result_sent == 1
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_RELEASING}: RAN decode: CLEAR_COMPLETE
@@ -2190,6 +2160,7 @@
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_ciph()
@@ -2387,6 +2358,7 @@
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=5234234234234276
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=52342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
+DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_ciph()
@@ -2643,7 +2615,7 @@
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - mm_rx_loc_upd_req: now used by 2 (rx_from_ms,lu)
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
-- MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
+- MS replies with an Identity Response, causes an early GSUP Check IMEI request to HLR
   MSC <--GERAN-A-- MS: GSM48_MT_MM_ID_RESP
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
@@ -2652,22 +2624,31 @@
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_auth()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_post_ciph()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node_4()
-DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: state_chg to VLR_ULA_S_WAIT_HLR_UPD
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: vlr_loc_upd_node1_pre()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: state_chg to VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY
+GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
+DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
+- Subscriber has the IMEISV from the ID Response
+DREF VLR subscr IMSI-901700000004620 + test_no_authen_imeisv_tmsi_imei: now used by 2 (active-conn,test_no_authen_imeisv_tmsi_imei)
+  strcmp(vsub->imeisv, "4234234234234275") == 0
+DREF VLR subscr IMSI-901700000004620 - test_no_authen_imeisv_tmsi_imei: now used by 1 (active-conn)
+- HLR accepts the IMEI, VLR responds with LU Request
+<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: 32010809710000004026f05101000a0101
+DREF VLR subscr IMSI-901700000004620 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: Received Event VLR_ULA_E_HLR_IMEI_ACK
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_node1()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_post_auth()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_post_ciph()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: vlr_loc_upd_node_4()
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY}: state_chg to VLR_ULA_S_WAIT_HLR_UPD
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: Allocated
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: is child of vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU)
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: Received Event UPD_HLR_VLR_E_START
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f02801020a0101
 DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
+DREF VLR subscr IMSI-901700000004620 - vlr_gsup_rx: now used by 1 (active-conn)
+<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
-- Subscriber has the IMEISV from the ID Response
-DREF VLR subscr IMSI-901700000004620 + test_no_authen_imeisv_tmsi_imei: now used by 2 (active-conn,test_no_authen_imeisv_tmsi_imei)
-  strcmp(vsub->imeisv, "4234234234234275") == 0
-DREF VLR subscr IMSI-901700000004620 - test_no_authen_imeisv_tmsi_imei: now used by 1 (active-conn)
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000004026f00804036470f10a0101
 DREF VLR subscr IMSI-901700000004620 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
@@ -2697,7 +2678,7 @@
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: SMS:0x01
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
   lu_result_sent == 0
-- HLR also sends GSUP _UPDATE_LOCATION_RESULT, and we send an ID Request for the IMEI to the MS
+- HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f00a0101
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
@@ -2712,57 +2693,13 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_INIT}: Received Event LU_COMPL_VLR_E_START
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI_TMSI
-DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN encode: DTAP on GERAN-A
-- DTAP --GERAN-A--> MS: GSM48_MT_MM_ID_REQ: 051802
-- DTAP matches expected message
-DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
-DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - vlr_gsup_rx: now used by 1 (active-conn)
-<-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
-- We will only do business when the IMEI is known
-  llist_count(&msub_list) == 1
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + test_no_authen_imeisv_tmsi_imei: now used by 2 (active-conn,test_no_authen_imeisv_tmsi_imei)
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - test_no_authen_imeisv_tmsi_imei: now used by 1 (active-conn)
-msc_a_is_accepted() == false
-  requests shall be thwarted
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: CC GSM48_MT_CC_SETUP
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: GSM48_MT_CC_SETUP
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM unknown 0x33
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: unknown 0x33
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: RR GSM48_MT_RR_SYSINFO_1
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: SMS SMS:0x01
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Message not permitted for initial conn: SMS:0x01
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (rc=-13) for DTAP from MSC-I
-- MS replies with an Identity Response, VLR sends the IMEI to HLR
-  MSC <--GERAN-A-- MS: GSM48_MT_MM_ID_RESP
-DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
-DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
-DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
-DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
-DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
-GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
-DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: now used by 1 (lu)
-- HLR accepts the IMEI
-<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: 32010809710000004026f05101000a0101
-DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_gsup_rx: now used by 2 (active-conn,vlr_gsup_rx)
-DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_HLR_IMEI_ACK
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: Received Event LU_COMPL_VLR_E_IMEI_CHECK_ACK
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: lu_compl_vlr_new_tmsi()
+DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
 DVLR SUBSCR(IMSI-901700000004620:MSISDN-46071:TMSInew-0x03020100) VLR: update for IMSI=901700000004620 (MSISDN=46071)
-DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
+DVLR lu_compl_vlr_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000004620:MSISDN-46071:TMSInew-0x03020100:GERAN-A:LU, with TMSI 0x03020100
+DVLR upd_hlr_vlr_fsm(IMSI-901700000004620:GERAN-A:LU){UPD_HLR_VLR_S_DONE}: Deallocated
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSInew-0x03020100 - vlr_gsup_rx: now used by 1 (active-conn)
-<-- GSUP rx OSMO_GSUP_MSGT_CHECK_IMEI_RESULT: vlr_gsupc_read_cb() returns 0
+<-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
   llist_count(&msub_list) == 1
   lu_result_sent == 1
@@ -2941,6 +2878,7 @@
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: Received Event MSC_A_EV_COMPLETE_LAYER_3_OK
 DMSC msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_VALIDATE_L3}: state_chg to MSC_A_ST_AUTH_CIPH
 DREF VLR subscr IMSI-901700000004620 - _lu_fsm_associate_vsub: now used by 1 (active-conn)
+DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1_pre()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_auth()
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_post_ciph()