gbproxy/test: Test IMSI acquisition for RA UDP REQ

When a MS is state GMM_REGISTERED enters a new RA, it sends a RA
Update Request which is then handled by a gbproxy that possibly
doesn't have a matching tlli_info. In this case, depending on the
configuration an identification procedure to acquire the IMSI must be
started.

This adds tests to test_gbproxy_imsi_acquisition():
 - IMSI acquisition triggered by a RA Update Request message
 - Reaction to repeated RA Update Request messages, like it could be
   caused by packet loss between PCU and gbproxy.

Sponsored-by: On-Waves ehf

2 files changed, 218 insertions, 18 deletions

diff --git a/openbsc/tests/gbproxy/gbproxy_test.c b/openbsc/tests/gbproxy/gbproxy_test.c
index 764027940..80bf905e6 100644
--- a/openbsc/tests/gbproxy/gbproxy_test.c
+++ b/openbsc/tests/gbproxy/gbproxy_test.c
@@ -2203,6 +2203,7 @@ static void test_gbproxy_imsi_acquisition()
 	const uint32_t sgsn_ptmsi = 0xefe2b700;
 	const uint32_t local_sgsn_tlli = 0xefe2b700;
 	const uint32_t random_sgsn_tlli = 0x7c69fb81;
+	const uint32_t random_sgsn_tlli2 = 0x7eb52dfb;
 
 	const uint32_t bss_ptmsi = 0xc00f7304;
 	const uint32_t local_bss_tlli = 0xc00f7304;
@@ -2404,6 +2405,43 @@ static void test_gbproxy_imsi_acquisition()
 
 	dump_peers(stdout, 0, 0, &gbcfg);
 
+	/* RA Update request */
+
+	send_llc_ul_ui(nsi, "RA UPD REQ", &bss_peer[0], 0x1002,
+		       foreign_bss_tlli, &rai_unknown, 0x7080,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_ra_upd_req, sizeof(dtap_ra_upd_req));
+
+	send_llc_ul_ui(nsi, "IDENT RESPONSE", &bss_peer[0], 0x1002,
+		       foreign_bss_tlli, &rai_bss, cell_id,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_identity_resp, sizeof(dtap_identity_resp));
+
+	dump_peers(stdout, 0, 0, &gbcfg);
+
+	send_llc_dl_ui(nsi, "RA UDP ACC", &sgsn_peer, 0x1002,
+		       random_sgsn_tlli2, 1, imsi, sizeof(imsi),
+		       GPRS_SAPI_GMM, sgsn_nu++,
+		       dtap_ra_upd_acc, sizeof(dtap_ra_upd_acc));
+
+	dump_peers(stdout, 0, 0, &gbcfg);
+
+	/* Detach */
+
+	send_llc_ul_ui(nsi, "DETACH REQ", &bss_peer[0], 0x1002,
+		       local_bss_tlli, &rai_bss, cell_id,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_detach_req, sizeof(dtap_detach_req));
+
+	dump_peers(stdout, 0, 0, &gbcfg);
+
+	send_llc_dl_ui(nsi, "DETACH ACC", &sgsn_peer, 0x1002,
+		       local_sgsn_tlli, 1, imsi, sizeof(imsi),
+		       GPRS_SAPI_GMM, sgsn_nu++,
+		       dtap_detach_acc, sizeof(dtap_detach_acc));
+
+	dump_peers(stdout, 0, 0, &gbcfg);
+
 	/* Special case: Repeated Attach Requests */
 
 	send_llc_ul_ui(nsi, "ATTACH REQUEST", &bss_peer[0], 0x1002,
@@ -2432,6 +2470,25 @@ static void test_gbproxy_imsi_acquisition()
 
 	dump_peers(stdout, 0, 0, &gbcfg);
 
+	/* Special case: Repeated RA Update Requests */
+
+	send_llc_ul_ui(nsi, "RA UPD REQ", &bss_peer[0], 0x1002,
+		       foreign_bss_tlli, &rai_unknown, 0x7080,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_ra_upd_req, sizeof(dtap_ra_upd_req));
+
+	send_llc_ul_ui(nsi, "RA UPD REQ", &bss_peer[0], 0x1002,
+		       foreign_bss_tlli, &rai_unknown, 0x7080,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_ra_upd_req, sizeof(dtap_ra_upd_req));
+
+	send_llc_ul_ui(nsi, "DETACH REQ", &bss_peer[0], 0x1002,
+		       foreign_bss_tlli, &rai_bss, cell_id,
+		       GPRS_SAPI_GMM, bss_nu++,
+		       dtap_detach_req, sizeof(dtap_detach_req));
+
+	dump_peers(stdout, 0, 0, &gbcfg);
+
 	dump_global(stdout, 0);
 
 	gbprox_reset(&gbcfg);
diff --git a/openbsc/tests/gbproxy/gbproxy_test.ok b/openbsc/tests/gbproxy/gbproxy_test.ok
index 1ec6bc433..8df833b47 100644
--- a/openbsc/tests/gbproxy/gbproxy_test.ok
+++ b/openbsc/tests/gbproxy/gbproxy_test.ok
@@ -3382,11 +3382,113 @@ Peers:
     P-TMSI patched            (SGSN): 1
     Attach Request count            : 1
     TLLI-Cache: 0
+PROCESSING RA UPD REQ from 0x01020304:1111
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 15 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 96 3e 97 
+
+CALLBACK, event 0, msg length 85, bvci 0x1002
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 15 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 96 3e 97 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 28
+00 00 10 02 00 80 00 de ad 00 50 20 16 82 02 58 0e 00 09 41 c4 01 08 15 01 b7 f8 36 
+
+result (RA UPD REQ) = 0
+
+PROCESSING IDENT RESPONSE from 0x01020304:1111
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 11 01 c0 19 08 16 08 11 12 13 14 15 16 17 18 35 23 fc 
+
+CALLBACK, event 0, msg length 40, bvci 0x1002
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 11 01 c0 19 08 16 08 11 12 13 14 15 16 17 18 35 23 fc 
+
+NS UNITDATA MESSAGE to SGSN, BVCI 0x1002, msg length 85 (gprs_ns_sendmsg)
+MESSAGE to SGSN at 0x05060708:32000, msg length 89
+00 00 10 02 01 7e b5 2d fb 00 00 04 08 88 21 63 54 00 63 60 70 80 00 80 0e 00 3e 01 c0 15 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 96 3e 97 
+
+result (IDENT RESPONSE) = 0
+
+Peers:
+  NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 3
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 9
+    P-TMSI patched            (SGSN): 1
+    Attach Request count            : 1
+    TLLI cache size                 : 1
+    TLLI-Cache: 1
+      TLLI 8000dead -> 7eb52dfb, IMSI 12131415161718, AGE 0, IMSI matches
+PROCESSING RA UDP ACC from 0x05060708:32000
+00 00 10 02 00 7e b5 2d fb 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 9d 41 c0 11 08 09 00 49 21 63 54 40 50 60 19 54 ab b3 18 05 f4 ef e2 b7 00 17 16 36 98 77 
+
+CALLBACK, event 0, msg length 87, bvci 0x1002
+00 00 10 02 00 7e b5 2d fb 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 9d 41 c0 11 08 09 00 49 21 63 54 40 50 60 19 54 ab b3 18 05 f4 ef e2 b7 00 17 16 36 98 77 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 87 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 91
+00 00 10 02 00 80 00 de ad 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 9d 41 c0 11 08 09 00 49 11 22 33 40 50 60 19 54 ab b3 18 05 f4 e6 56 aa 1f 17 16 cb d8 0b 
+
+result (RA UDP ACC) = 91
+
+Peers:
+  NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 10
+    P-TMSI patched            (SGSN): 2
+    Attach Request count            : 1
+    TLLI cache size                 : 1
+    TLLI-Cache: 1
+      TLLI 8000dead/e656aa1f -> 7eb52dfb/efe2b700, IMSI 12131415161718, AGE 0, IMSI matches
+PROCESSING DETACH REQ from 0x01020304:1111
+00 00 10 02 01 c0 0f 73 04 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 1d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb aa cc a3 
+
+CALLBACK, event 0, msg length 44, bvci 0x1002
+00 00 10 02 01 c0 0f 73 04 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 1d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb aa cc a3 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 28
+00 00 10 02 00 c0 0f 73 04 00 50 20 16 82 02 58 0e 00 09 41 c4 01 08 06 00 11 f5 c0 
+
+result (DETACH REQ) = 0
+
+Peers:
+  NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 10
+    P-TMSI patched            (SGSN): 2
+    Attach Request count            : 1
+    TLLI cache size                 : 1
+    TLLI-Cache: 1
+      TLLI 8000dead/e656aa1f -> 7eb52dfb/efe2b700, IMSI 12131415161718, AGE 0, IMSI matches
+PROCESSING DETACH ACC from 0x05060708:32000
+00 00 10 02 00 ef e2 b7 00 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 89 41 c0 15 08 06 00 f7 35 f0 
+
+CALLBACK, event 0, msg length 67, bvci 0x1002
+00 00 10 02 00 ef e2 b7 00 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 89 41 c0 15 08 06 00 f7 35 f0 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 67 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 71
+00 00 10 02 00 e6 56 aa 1f 00 50 20 16 82 02 58 13 99 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 0a 82 08 02 0d 88 11 12 13 14 15 16 17 18 00 81 00 0e 89 41 c0 15 08 06 00 f7 35 f0 
+
+result (DETACH ACC) = 71
+
+Peers:
+  NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 11
+    P-TMSI patched            (SGSN): 2
+    Attach Request count            : 1
+    TLLI-Cache: 0
 PROCESSING ATTACH REQUEST from 0x01020304:1111
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 15 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 e6 1c b0 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 21 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 44 b6 bb 
 
 CALLBACK, event 0, msg length 75, bvci 0x1002
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 15 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 e6 1c b0 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 21 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 44 b6 bb 
 
 NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
 MESSAGE to BSS at 0x01020304:1111, msg length 28
@@ -3395,10 +3497,10 @@ MESSAGE to BSS at 0x01020304:1111, msg length 28
 result (ATTACH REQUEST) = 0
 
 PROCESSING ATTACH REQUEST from 0x01020304:1111
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 19 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 b6 33 df 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 25 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 1d aa 57 
 
 CALLBACK, event 0, msg length 75, bvci 0x1002
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 19 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 b6 33 df 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 12 34 00 80 0e 00 34 01 c0 25 08 01 02 f5 e0 21 08 02 05 f4 fb c5 46 79 11 22 33 40 50 60 19 18 b3 43 2b 25 96 62 00 60 80 9a c2 c6 62 00 60 80 ba c8 c6 62 00 60 80 00 1d aa 57 
 
 NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
 MESSAGE to BSS at 0x01020304:1111, msg length 28
@@ -3407,10 +3509,10 @@ MESSAGE to BSS at 0x01020304:1111, msg length 28
 result (ATTACH REQUEST) = 0
 
 PROCESSING DETACH REQ from 0x01020304:1111
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 1d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb aa cc a3 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 29 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb d9 1d ef 
 
 CALLBACK, event 0, msg length 44, bvci 0x1002
-00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 1d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb aa cc a3 
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 29 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb d9 1d ef 
 
 NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
 MESSAGE to BSS at 0x01020304:1111, msg length 28
@@ -3420,18 +3522,18 @@ result (DETACH REQ) = 0
 
 Peers:
   NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
-    RAID patched              (BSS ): 9
-    RAID patched              (SGSN): 3
-    TLLI patched              (BSS ): 9
-    TLLI patched              (SGSN): 9
-    P-TMSI patched            (SGSN): 1
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 11
+    P-TMSI patched            (SGSN): 2
     Attach Request count            : 3
     TLLI-Cache: 0
 PROCESSING DETACH REQ (unknown TLLI) from 0x01020304:1111
-00 00 10 02 01 80 00 be ef 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 21 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb ca 4d 70 
+00 00 10 02 01 80 00 be ef 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 2d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb 0d 30 0d 
 
 CALLBACK, event 0, msg length 44, bvci 0x1002
-00 00 10 02 01 80 00 be ef 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 21 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb ca 4d 70 
+00 00 10 02 01 80 00 be ef 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 2d 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb 0d 30 0d 
 
 NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
 MESSAGE to BSS at 0x01020304:1111, msg length 28
@@ -3441,11 +3543,52 @@ result (DETACH REQ (unknown TLLI)) = 0
 
 Peers:
   NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
-    RAID patched              (BSS ): 9
-    RAID patched              (SGSN): 3
-    TLLI patched              (BSS ): 9
-    TLLI patched              (SGSN): 9
-    P-TMSI patched            (SGSN): 1
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 11
+    P-TMSI patched            (SGSN): 2
+    Attach Request count            : 3
+    TLLI-Cache: 0
+PROCESSING RA UPD REQ from 0x01020304:1111
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 31 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 d8 cf d8 
+
+CALLBACK, event 0, msg length 85, bvci 0x1002
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 31 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 d8 cf d8 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 28
+00 00 10 02 00 80 00 de ad 00 50 20 16 82 02 58 0e 00 09 41 c4 01 08 15 01 b7 f8 36 
+
+result (RA UPD REQ) = 0
+
+PROCESSING RA UPD REQ from 0x01020304:1111
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 35 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 ac 9c 37 
+
+CALLBACK, event 0, msg length 85, bvci 0x1002
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 00 f1 99 00 63 60 70 80 00 80 0e 00 3e 01 c0 35 08 08 10 11 22 33 40 50 60 1d 19 13 42 33 57 2b f7 c8 48 02 13 48 50 c8 48 02 14 48 50 c8 48 02 17 49 10 c8 48 02 00 19 8b b2 92 17 16 27 07 04 31 02 e5 e0 32 02 20 00 ac 9c 37 
+
+result (RA UPD REQ) = 0
+
+PROCESSING DETACH REQ from 0x01020304:1111
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 39 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb 44 b6 8a 
+
+CALLBACK, event 0, msg length 44, bvci 0x1002
+00 00 10 02 01 80 00 de ad 00 00 04 08 88 11 22 33 40 50 60 12 34 00 80 0e 00 15 01 c0 39 08 05 01 18 05 f4 ef e2 b7 00 19 03 b9 97 cb 44 b6 8a 
+
+NS UNITDATA MESSAGE to BSS, BVCI 0x1002, msg length 24 (gprs_ns_sendmsg)
+MESSAGE to BSS at 0x01020304:1111, msg length 28
+00 00 10 02 00 80 00 de ad 00 50 20 16 82 02 58 0e 00 09 41 c4 01 08 06 00 11 f5 c0 
+
+result (DETACH REQ) = 0
+
+Peers:
+  NSEI 4096, BVCI 4098, not blocked, RAI 112-332-16464-96
+    RAID patched              (BSS ): 10
+    RAID patched              (SGSN): 4
+    TLLI patched              (BSS ): 10
+    TLLI patched              (SGSN): 11
+    P-TMSI patched            (SGSN): 2
     Attach Request count            : 3
     TLLI-Cache: 0
 Gbproxy global: