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[ip6] use ALOC source address (#6007)

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CoAP requires that the source address of a response must match the
destination addresses of the request. So, if a device sends a TMF
request using ALOC as destination address, the TMF response SHOULD use
the ALOC as source address. Otherwise, CoAP implementations (beside
OpenThread) may fail to match the request and response.
This commit is contained in:
Simon Lin
2020-12-24 11:00:03 -08:00
committed by GitHub
parent 41e7f52f41
commit 471cf8bedf
7 changed files with 43 additions and 53 deletions
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tests/scripts/thread-cert/Cert_8_3_01_CommissionerPetition.py
+10 -10
View File
@@ -119,7 +119,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# Commissioner ID TLV
pv.verify_attached('COMMISSIONER', 'LEADER')
_pkt = pkts.last()
pkts.filter_wpan_src64(COMMISSIONER).\
_leader_pet_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_wpan_dst16(LEADER_RLOC16).\
filter_coap_request(LEAD_PET_URI).\
filter(lambda p: {
@@ -143,7 +143,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# - Leader Data TLV
# - Network Data TLV
# - Source Address TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_leader_pet_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(LEAD_PET_URI).\
filter(lambda p: {
NM_STATE_TLV,
@@ -182,7 +182,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# CoAP Payload
# State TLV (value = Accept)
# Commissioner Session ID TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_leader_ka_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(LEAD_KA_URI).\
filter(lambda p: {
@@ -198,7 +198,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Accept)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_leader_ka_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(LEAD_KA_URI).\
filter(lambda p: {
NM_STATE_TLV
@@ -214,7 +214,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV
# Steering Data TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -237,7 +237,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# - Leader Data TLV
# - Network Data TLV
# - Source Address TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
NM_STATE_TLV
@@ -276,7 +276,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# CoAP Payload
# State TLV (value = Reject)
# Commissioner Session ID TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_leader_ka_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(LEAD_KA_URI).\
filter(lambda p: {
@@ -300,7 +300,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# - Leader Data TLV
# - Network Data TLV
# - Source Address TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_leader_ka_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(LEAD_KA_URI).\
filter(lambda p: {
NM_STATE_TLV
@@ -334,7 +334,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# CON POST coap://<L>:MM/c/lp
# CoAP Payload
# Commissioner ID TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_leader_pet_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(LEAD_PET_URI).\
filter(lambda p: {
@@ -352,7 +352,7 @@ class Cert_8_3_01_CommissionerPetition(thread_cert.TestCase):
# Commissioner ID TLV
# Commissioner Session ID TLV (contains higher Session ID number
# than in Step 9)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_leader_pet_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(LEAD_PET_URI).\
filter(lambda p: {
NM_STATE_TLV,
tests/scripts/thread-cert/Cert_9_2_01_MGMTCommissionerGet.py
+8 -8
View File
@@ -56,6 +56,7 @@ LEADER = 2
class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
SUPPORT_NCP = False
USE_MESSAGE_FACTORY = True
TOPOLOGY = {
COMMISSIONER: {
@@ -82,7 +83,6 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
self.nodes[COMMISSIONER].start()
self.simulator.go(5)
self.assertEqual(self.nodes[COMMISSIONER].get_state(), 'router')
self.simulator.get_messages_sent_by(LEADER)
self.collect_leader_aloc(LEADER)
self.collect_rlocs()
@@ -143,7 +143,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# Border Agent Locator TLV
# Commissioner Session ID TLV
# Steering Data TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
NM_COMMISSIONER_SESSION_ID_TLV,
@@ -163,7 +163,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV
# Steering Data TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
@@ -181,7 +181,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# Encoded values for the requested Commissioner Dataset parameters
# Commissioner Session ID TLV
# Steering Data TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
NM_COMMISSIONER_SESSION_ID_TLV,
@@ -199,7 +199,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV
# PAN ID TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
@@ -217,7 +217,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# Encoded values for the requested Commissioner Dataset parameters
# Commissioner Session ID TLV
# (PAN ID TLV in Get TLV is ignored)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
NM_COMMISSIONER_SESSION_ID_TLV
@@ -234,7 +234,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# CoAP Payload
# Border Agent Locator TLV
# Network Name TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
@@ -252,7 +252,7 @@ class Cert_9_2_01_MGMTCommissionerGet(thread_cert.TestCase):
# Encoded values for the requested Commissioner Dataset parameters
# Border Agent Locator TLV
# (Network Name TLV in Get TLV is ignored)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_GET_URI).\
filter(lambda p: {
NM_BORDER_AGENT_LOCATOR_TLV
tests/scripts/thread-cert/Cert_9_2_02_MGMTCommissionerSet.py
+12 -12
View File
@@ -152,7 +152,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# CoAP Payload
# (missing Commissioner Session ID TLV)
# Steering Data TLV (0xFF)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
@@ -167,7 +167,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Reject)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
@@ -182,7 +182,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV
# Steering Data TLV (0xFF)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -199,7 +199,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Accept)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
@@ -241,7 +241,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV
# Border Agent Locator TLV (0x0400) (not allowed TLV)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -258,7 +258,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Reject)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
@@ -274,7 +274,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# Commissioner Session ID TLV
# Steering Data TLV (0xFF)
# Border Agent Locator TLV (0x0400) (not allowed TLV)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -293,7 +293,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Reject)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
@@ -308,7 +308,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# CoAP Payload
# Commissioner Session ID TLV (0xFFFF) (invalid value)
# Steering Data TLV (0xFF)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -326,7 +326,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Reject)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
@@ -342,7 +342,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# Commissioner Session ID TLV
# Steering Data TLV (0xFF)
# Channel TLV (not allowed TLV)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p: {
@@ -360,7 +360,7 @@ class Cert_9_2_02_MGMTCommissionerSet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Accept)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_COMMISSIONER_SET_URI).\
filter(lambda p:
[NM_STATE_TLV] == p.coap.tlv.type and\
tests/scripts/thread-cert/Cert_9_2_03_ActiveDatasetGet.py
+2 -2
View File
@@ -57,6 +57,7 @@ LEADER = 2
class Cert_9_2_03_ActiveDatasetGet(thread_cert.TestCase):
SUPPORT_NCP = False
USE_MESSAGE_FACTORY = False
TOPOLOGY = {
COMMISSIONER: {
@@ -83,7 +84,6 @@ class Cert_9_2_03_ActiveDatasetGet(thread_cert.TestCase):
self.nodes[COMMISSIONER].start()
self.simulator.go(5)
self.assertEqual(self.nodes[COMMISSIONER].get_state(), 'router')
self.simulator.get_messages_sent_by(LEADER)
self.collect_rlocs()
self.collect_rloc16s()
@@ -152,7 +152,7 @@ class Cert_9_2_03_ActiveDatasetGet(thread_cert.TestCase):
# PAN ID TLV
# PSKc TLV
# Security Policy TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_ACTIVE_GET_URI).\
filter(lambda p: {
NM_ACTIVE_TIMESTAMP_TLV,
tests/scripts/thread-cert/Cert_9_2_19_PendingDatasetGet.py
+10 -10
View File
@@ -131,7 +131,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# CON POST coap://<L>:MM/c/pg
# CoAP Payload
# <empty> - get all Active Operational Dataset parameters
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_PENDING_GET_URI).\
filter(lambda p: p.coap.tlv.type is nullField).\
@@ -143,7 +143,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# <empty> - (no Pending Operational Dataset)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_PENDING_GET_URI).\
filter(lambda p: p.coap.tlv.type is nullField).\
must_next()
@@ -158,7 +158,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# Delay Timer TLV: 1 minute
# Pending Timestamp TLV: 30s
# PAN ID TLV: 0xAFCE (new value)
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_pending_set_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_PENDING_SET_URI).\
filter(lambda p: {
@@ -179,7 +179,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# State TLV (value = Accept (01))
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_pending_set_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_PENDING_SET_URI).\
filter(lambda p:
p.thread_meshcop.tlv.state == 1
@@ -192,7 +192,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# CON POST coap://<L>:MM/c/pg
# CoAP Payload
# <empty> - get all Active Operational Dataset parameters
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_pending_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_PENDING_GET_URI).\
filter(lambda p: p.coap.tlv.type is nullField).\
@@ -216,7 +216,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# Pending Timestamp TLV
# PSKc TLV
# Security Policy TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_pending_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_PENDING_GET_URI).\
filter(lambda p: {
NM_ACTIVE_TIMESTAMP_TLV,
@@ -241,7 +241,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# CON POST coap://<L>:MM/c/pg
# CoAP Payload
# PAN ID TLV
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_pending_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_PENDING_GET_URI).\
filter(lambda p: {
@@ -257,7 +257,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# CoAP Payload
# PAN ID TLV
# Delay Timer TLV
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_pending_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_PENDING_GET_URI).\
filter(lambda p: {
NM_DELAY_TIMER_TLV,
@@ -274,7 +274,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# CON POST coap://<L>:MM/c/pg
# CoAP Payload
# <empty> - get all Active Operational Dataset parameters
pkts.filter_wpan_src64(COMMISSIONER).\
_mgmt_pending_get_pkt = pkts.filter_wpan_src64(COMMISSIONER).\
filter_ipv6_2dsts(LEADER_ALOC, LEADER_RLOC).\
filter_coap_request(MGMT_PENDING_GET_URI).\
filter(lambda p: p.coap.tlv.type is nullField).\
@@ -286,7 +286,7 @@ class Cert_9_2_19_PendingDatasetGet(thread_cert.TestCase):
# 2.04 Changed
# CoAP Payload
# <empty> - (no Pending Operational Dataset)
pkts.filter_ipv6_src_dst(LEADER_RLOC, COMMISSIONER_RLOC).\
pkts.filter_ipv6_src_dst(_mgmt_pending_get_pkt.ipv6.dst, COMMISSIONER_RLOC).\
filter_coap_ack(MGMT_PENDING_GET_URI).\
filter(lambda p: p.thread_meshcop.tlv.type is nullField).\
must_next()