diff --git a/examples/openthread/ot_br/main/idf_component.yml b/examples/openthread/ot_br/main/idf_component.yml
index 2f9c0f6440..c5955f8e3b 100644
--- a/examples/openthread/ot_br/main/idf_component.yml
+++ b/examples/openthread/ot_br/main/idf_component.yml
@@ -1,6 +1,6 @@
 ## IDF Component Manager Manifest File
 dependencies:
-  espressif/esp_ot_cli_extension: "~0.1.0"
+  espressif/esp_ot_cli_extension: "~0.2.0"
   espressif/mdns: "^1.0.3"
   ## Required IDF version
   idf:
diff --git a/examples/openthread/ot_ci_function.py b/examples/openthread/ot_ci_function.py
index ac49307dd8..7fdc35a0e2 100644
--- a/examples/openthread/ot_ci_function.py
+++ b/examples/openthread/ot_ci_function.py
@@ -30,20 +30,20 @@ def reset_thread(dut:IdfDut) -> None:
 def config_thread(dut:IdfDut, model:str, dataset:str='0') -> Union[str, None]:
     if model == 'random':
         dut.write('dataset init new')
-        dut.expect('Done', timeout=2)
+        dut.expect('Done', timeout=5)
         dut.write('dataset commit active')
-        dut.expect('Done', timeout=2)
+        dut.expect('Done', timeout=5)
         dut.write('ifconfig up')
-        dut.expect('Done', timeout=2)
+        dut.expect('Done', timeout=5)
         dut.write('dataset active -x')          # get dataset
         dut_data = dut.expect(r'\n(\w{212})\r', timeout=5)[1].decode()
         return str(dut_data)
     if model == 'appointed':
         tmp = 'dataset set active ' + str(dataset)
         dut.write(tmp)
-        dut.expect('Done', timeout=2)
+        dut.expect('Done', timeout=5)
         dut.write('ifconfig up')
-        dut.expect('Done', timeout=2)
+        dut.expect('Done', timeout=5)
         return None
     return None
 
@@ -121,9 +121,9 @@ def form_network_using_manual_configuration(leader:IdfDut, child:IdfDut, leader_
     reset_thread(child)
     clean_buffer(child)
     leader.write('channel 12')
-    leader.expect('Done', timeout=2)
+    leader.expect('Done', timeout=5)
     child.write('channel 12')
-    child.expect('Done', timeout=2)
+    child.expect('Done', timeout=5)
     res = '0000'
     if wifi_psk != '0000':
         res = connect_wifi(wifi, wifi_ssid, wifi_psk, 10)[0]
@@ -134,7 +134,7 @@ def form_network_using_manual_configuration(leader:IdfDut, child:IdfDut, leader_
         config_thread(leader, 'appointed', thread_dataset)
     if leader_name == 'br':
         leader.write('bbr enable')
-        leader.expect('Done', timeout=2)
+        leader.expect('Done', timeout=5)
     role = start_thread(leader)
     assert role == 'leader'
     if thread_dataset_model == 'random':
@@ -143,7 +143,7 @@ def form_network_using_manual_configuration(leader:IdfDut, child:IdfDut, leader_
         config_thread(child, 'appointed', thread_dataset)
     if leader_name != 'br':
         child.write('bbr enable')
-        child.expect('Done', timeout=2)
+        child.expect('Done', timeout=5)
     role = start_thread(child)
     assert role == 'child'
     wait(leader, 10)
@@ -168,10 +168,10 @@ def connect_wifi(dut:IdfDut, ssid:str, psk:str, nums:int) -> Tuple[str, int]:
     information = ''
     for order in range(1, nums):
         dut.write('wifi connect -s ' + str(ssid) + ' -p ' + str(psk))
-        tmp = dut.expect(pexpect.TIMEOUT, timeout=5)
+        tmp = dut.expect(pexpect.TIMEOUT, timeout=10)
         if 'sta ip' in str(tmp):
             ip_address = re.findall(r'sta ip: (\w+.\w+.\w+.\w+),', str(tmp))[0]
-        information = dut.expect(r'wifi sta (\w+ \w+ \w+)\W', timeout=5)[1].decode()
+        information = dut.expect(r'wifi sta (\w+ \w+ \w+)\W', timeout=20)[1].decode()
         if information == 'is connected successfully':
             break
     assert information == 'is connected successfully'
@@ -277,7 +277,7 @@ def check_ipmaddr(dut:IdfDut) -> bool:
 def thread_is_joined_group(dut:IdfDut) -> bool:
     command = 'mcast join ' + thread_ipv6_group
     dut.write(command)
-    dut.expect('Done', timeout=2)
+    dut.expect('Done', timeout=5)
     order = 0
     while order < 3:
         if check_ipmaddr(dut):
@@ -288,22 +288,22 @@ def thread_is_joined_group(dut:IdfDut) -> bool:
     return False
 
 
-host_ipv6_group = 'ff04::125'
-
-
-def host_joined_group() -> bool:
+def host_joined_group(group:str='') -> bool:
     interface_name = get_host_interface_name()
     command = 'netstat -g | grep ' + str(interface_name)
     out_str = subprocess.getoutput(command)
     print('groups:\n', str(out_str))
-    return host_ipv6_group in str(out_str)
+    return group in str(out_str)
 
 
 class udp_parameter:
 
-    def __init__(self, group:str='', try_join_udp_group:bool=False, timeout:float=15.0, udp_bytes:bytes=b''):
+    def __init__(self, udp_type:str='', addr:str='::', port:int=5090, group:str='', init_flag:bool=False, timeout:float=15.0, udp_bytes:bytes=b''):
+        self.udp_type = udp_type
+        self.addr = addr
+        self.port = port
         self.group = group
-        self.try_join_udp_group = try_join_udp_group
+        self.init_flag = init_flag
         self.timeout = timeout
         self.udp_bytes = udp_bytes
 
@@ -311,16 +311,22 @@ class udp_parameter:
 def create_host_udp_server(myudp:udp_parameter) -> None:
     interface_name = get_host_interface_name()
     try:
+        if myudp.udp_type == 'INET6':
+            AF_INET = socket.AF_INET6
+        else:
+            AF_INET = socket.AF_INET
         print('The host start to create udp server!')
         if_index = socket.if_nametoindex(interface_name)
-        sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
-        sock.bind(('::', 5090))
-        sock.setsockopt(
-            socket.IPPROTO_IPV6, socket.IPV6_JOIN_GROUP,
-            struct.pack('16si', socket.inet_pton(socket.AF_INET6, myudp.group),
-                        if_index))
-        myudp.try_join_udp_group = True
+        sock = socket.socket(AF_INET, socket.SOCK_DGRAM)
+        sock.bind((myudp.addr, myudp.port))
+
+        if myudp.udp_type == 'INET6' and myudp.group != '':
+            sock.setsockopt(
+                socket.IPPROTO_IPV6, socket.IPV6_JOIN_GROUP,
+                struct.pack('16si', socket.inet_pton(socket.AF_INET6, myudp.group),
+                            if_index))
         sock.settimeout(myudp.timeout)
+        myudp.init_flag = True
         print('The host start to receive message!')
         myudp.udp_bytes = (sock.recvfrom(1024))[0]
         print('The host has received message: ', myudp.udp_bytes)
@@ -333,3 +339,137 @@ def create_host_udp_server(myudp:udp_parameter) -> None:
 
 def wait(dut:IdfDut, wait_time:float) -> None:
     dut.expect(pexpect.TIMEOUT, timeout=wait_time)
+
+
+def get_host_ipv4_address() -> str:
+    interface_name = get_host_interface_name()
+    command = 'ifconfig ' + interface_name + " | grep -w 'inet' | awk '{print $2}'"
+    out_bytes = subprocess.check_output(command, shell=True, timeout=5)
+    out_str = out_bytes.decode('utf-8')
+    host_ipv4_address = ''
+    host_ipv4_address = re.findall(r'((?:\d+.){3}\d+)', str(out_str))[0]
+    return host_ipv4_address
+
+
+def start_avahi() -> None:
+    time.sleep(1)
+    command = '/etc/init.d/dbus start'
+    subprocess.Popen(command, shell=True)
+    time.sleep(5)
+    command = 'avahi-daemon'
+    subprocess.Popen(command, shell=True)
+    time.sleep(5)
+
+
+def host_publish_service() -> None:
+    command = 'avahi-publish-service testxxx _testxxx._udp 12347 test=1235 dn="for_ci_br_test"'
+    subprocess.Popen(command, shell=True)
+    time.sleep(2)
+
+
+def host_close_service() -> None:
+    command = "ps | grep avahi-publish-s | awk '{print $1}'"
+    out_bytes = subprocess.check_output(command, shell=True, timeout=5)
+    out_str = out_bytes.decode('utf-8')
+    the_pid = re.findall(r'(\d+)\n', str(out_str))
+    for pid in the_pid:
+        command = 'kill -9 ' + pid
+        subprocess.call(command, shell=True, timeout=5)
+        time.sleep(1)
+
+
+def close_host_interface() -> None:
+    interface_name = get_host_interface_name()
+    flag = False
+    try:
+        command = 'ifconfig ' + interface_name + ' down'
+        subprocess.call(command, shell=True, timeout=5)
+        time.sleep(1)
+        flag = True
+    finally:
+        time.sleep(1)
+        assert flag
+
+
+def open_host_interface() -> None:
+    interface_name = get_host_interface_name()
+    flag = False
+    try:
+        command = 'ifconfig ' + interface_name + ' up'
+        subprocess.call(command, shell=True, timeout=5)
+        time.sleep(1)
+        flag = True
+    finally:
+        time.sleep(1)
+        assert flag
+
+
+def get_domain() -> str:
+    hostname = socket.gethostname()
+    print('hostname is: ', hostname)
+    command = 'ps -aux | grep avahi-daemon | grep running'
+    out_str = subprocess.getoutput(command)
+    print('avahi status:\n', out_str)
+    role = re.findall(r'\[([\w\W]+)\.local\]', str(out_str))[0]
+    print('active host is: ', role)
+    return str(role)
+
+
+class tcp_parameter:
+
+    def __init__(self, tcp_type:str='', addr:str='::', port:int=12345, listen_flag:bool=False, recv_flag:bool=False, timeout:float=15.0, tcp_bytes:bytes=b''):
+        self.tcp_type = tcp_type
+        self.addr = addr
+        self.port = port
+        self.listen_flag = listen_flag
+        self.recv_flag = recv_flag
+        self.timeout = timeout
+        self.tcp_bytes = tcp_bytes
+
+
+def create_host_tcp_server(mytcp:tcp_parameter) -> None:
+    try:
+        if mytcp.tcp_type == 'INET6':
+            AF_INET = socket.AF_INET6
+        else:
+            AF_INET = socket.AF_INET
+        print('The host start to create a tcp server!')
+        sock = socket.socket(AF_INET, socket.SOCK_STREAM)
+        sock.bind((mytcp.addr, mytcp.port))
+        sock.listen(5)
+        mytcp.listen_flag = True
+
+        print('The tcp server is waiting for connection!')
+        sock.settimeout(mytcp.timeout)
+        connfd,addr = sock.accept()
+        print('The tcp server connected with ',addr)
+        mytcp.recv_flag = True
+
+        mytcp.tcp_bytes = connfd.recv(1024)
+        print('The tcp server has received message: ', mytcp.tcp_bytes)
+
+    except socket.error:
+        if mytcp.recv_flag:
+            print('The tcp server did not receive message!')
+        else:
+            print('The tcp server fail to connect!')
+    finally:
+        print('Close the socket.')
+        sock.close()
+
+
+def get_ipv6_from_ipv4(ipv4_address:str, br:IdfDut) -> str:
+    clean_buffer(br)
+    br.write('br nat64prefix')
+    omrprefix = br.expect(r'\n((?:\w+:){6}):/\d+', timeout=5)[1].decode()
+    ipv4_find = re.findall(r'\d+', ipv4_address)
+    ipv6_16_1 = decimal_to_hex(ipv4_find[0]) + decimal_to_hex(ipv4_find[1])
+    ipv6_16_2 = decimal_to_hex(ipv4_find[2]) + decimal_to_hex(ipv4_find[3])
+    ipv6_get_from_ipv4 = omrprefix + ':' + ipv6_16_1 + ':' + ipv6_16_2
+    return str(ipv6_get_from_ipv4)
+
+
+def decimal_to_hex(decimal_str:str) -> str:
+    decimal_int = int(decimal_str)
+    hex_str = hex(decimal_int)[2:]
+    return hex_str
diff --git a/examples/openthread/ot_cli/main/idf_component.yml b/examples/openthread/ot_cli/main/idf_component.yml
index 2246fc9a0e..768f5e8b22 100644
--- a/examples/openthread/ot_cli/main/idf_component.yml
+++ b/examples/openthread/ot_cli/main/idf_component.yml
@@ -1,5 +1,5 @@
 ## IDF Component Manager Manifest File
 dependencies:
-  espressif/esp_ot_cli_extension: "~0.1.0"
+  espressif/esp_ot_cli_extension: "~0.2.0"
   idf:
     version: ">=4.1.0"
diff --git a/examples/openthread/pytest_otbr.py b/examples/openthread/pytest_otbr.py
index ea012241d3..939590faeb 100644
--- a/examples/openthread/pytest_otbr.py
+++ b/examples/openthread/pytest_otbr.py
@@ -11,6 +11,7 @@ import time
 from typing import Tuple
 
 import ot_ci_function as ocf
+import pexpect
 import pytest
 from pytest_embedded_idf.dut import IdfDut
 
@@ -28,9 +29,33 @@ from pytest_embedded_idf.dut import IdfDut
 # Case 4: Multicast forwarding from Thread to Wi-Fi network
 #         Linux Host joins the multicast group, test group communication from Thread to Wi-Fi network.
 
+# Case 5: discover Serice published by Thread device
+#         Thread device publishes the service, Linux Host discovers the service on Wi-Fi network.
+
+# Case 6: discover Serice published by W-Fi device
+#         Linux Host device publishes the service on Wi-Fi network, Thread device discovers the service.
+
+# Case 7: ICMP communication via NAT64
+#         Thread device (IPV6) ping the host device (IPV4) via NAT64.
+
+# Case 8: UDP communication via NAT64
+#         Thread device (IPV6) send udp message to the host device (IPV4) via NAT64.
+
+# Case 9: TCP communication via NAT64
+#         Thread device (IPV6) send tcp message to the host device (IPV4) via NAT64.
+
+
+@pytest.fixture(scope='module', name='Init_avahi')
+def fixture_Init_avahi() -> bool:
+    print('Init Avahi')
+    ocf.start_avahi()
+    time.sleep(10)
+    return True
+
 
 @pytest.fixture(name='Init_interface')
 def fixture_Init_interface() -> bool:
+    print('Init interface')
     ocf.init_interface_ipv6_address()
     ocf.reset_host_interface()
     time.sleep(30)
@@ -45,8 +70,8 @@ wifi_psk = 'otcitest888'
 # Case 1: Thread network formation and attaching
 @pytest.mark.esp32s3
 @pytest.mark.esp32h4
-@pytest.mark.timeout(40 * 60)
 @pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
 @pytest.mark.parametrize(
     'port, config, count, app_path, beta_target, target', [
         ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
@@ -60,7 +85,7 @@ wifi_psk = 'otcitest888'
 def test_thread_connect(dut:Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
-    dut[0].close()
+    dut[0].serial.stop_redirect_thread()
 
     dataset = '-1'
     ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, '0000')
@@ -83,8 +108,8 @@ def test_thread_connect(dut:Tuple[IdfDut, IdfDut, IdfDut]) -> None:
 # Case 2: Bidirectional IPv6 connectivity
 @pytest.mark.esp32s3
 @pytest.mark.esp32h4
-@pytest.mark.timeout(40 * 60)
 @pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
 @pytest.mark.parametrize(
     'port, config, count, app_path, beta_target, target', [
         ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
@@ -99,7 +124,7 @@ def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut,
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
-    dut[0].close()
+    dut[0].serial.stop_redirect_thread()
 
     dataset = '-1'
     ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
@@ -134,8 +159,8 @@ def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut,
 # Case 3: Multicast forwarding from Wi-Fi to Thread network
 @pytest.mark.esp32s3
 @pytest.mark.esp32h4
-@pytest.mark.timeout(40 * 60)
 @pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
 @pytest.mark.parametrize(
     'port, config, count, app_path, beta_target, target', [
         ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
@@ -150,7 +175,7 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
-    dut[0].close()
+    dut[0].serial.stop_redirect_thread()
 
     dataset = '-1'
     ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
@@ -158,7 +183,7 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
     try:
         assert ocf.is_joined_wifi_network(br)
         br.write('bbr')
-        br.expect('server16', timeout=2)
+        br.expect('server16', timeout=5)
         assert ocf.thread_is_joined_group(cli)
         interface_name = ocf.get_host_interface_name()
         command = 'ping -I ' + str(interface_name) + ' -t 64 ff04::125 -c 10'
@@ -177,8 +202,8 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
 # Case 4: Multicast forwarding from Thread to Wi-Fi network
 @pytest.mark.esp32s3
 @pytest.mark.esp32h4
-@pytest.mark.timeout(40 * 60)
 @pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
 @pytest.mark.parametrize(
     'port, config, count, app_path, beta_target, target', [
         ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
@@ -193,31 +218,29 @@ def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
-    dut[0].close()
+    dut[0].serial.stop_redirect_thread()
 
     dataset = '-1'
     ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
     try:
         assert ocf.is_joined_wifi_network(br)
         br.write('bbr')
-        br.expect('server16', timeout=2)
+        br.expect('server16', timeout=5)
         cli.write('udp open')
-        cli.expect('Done', timeout=2)
-        ocf.wait(cli, 1)
-        cli.write('udp open')
-        cli.expect('Already', timeout=2)
-        myudp = ocf.udp_parameter('ff04::125', False, 15.0, b'')
+        cli.expect('Done', timeout=5)
+        ocf.wait(cli, 3)
+        myudp = ocf.udp_parameter('INET6', '::', 5090, 'ff04::125', False, 15.0, b'')
         udp_mission = threading.Thread(target=ocf.create_host_udp_server, args=(myudp, ))
         udp_mission.start()
         start_time = time.time()
-        while not myudp.try_join_udp_group:
+        while not myudp.init_flag:
             if (time.time() - start_time) > 10:
                 assert False
-        assert ocf.host_joined_group()
+        assert ocf.host_joined_group('ff04::125')
         for num in range(0, 3):
             command = 'udp send ff04::125 5090 hello' + str(num)
             cli.write(command)
-            cli.expect('Done', timeout=2)
+            cli.expect('Done', timeout=5)
             ocf.wait(cli, 0.5)
         while udp_mission.is_alive():
             time.sleep(1)
@@ -226,3 +249,283 @@ def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
         cli.write('factoryreset')
         time.sleep(3)
     assert b'hello' in myudp.udp_bytes
+
+
+# Case 5: discover dervice published by Thread device
+@pytest.mark.esp32s3
+@pytest.mark.esp32h4
+@pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.parametrize(
+    'port, config, count, app_path, beta_target, target', [
+        ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
+         f'{os.path.join(os.path.dirname(__file__), "ot_rcp")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_cli")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_br")}',
+         'esp32h2beta2|esp32h2beta2|esp32s3', 'esp32h4|esp32h4|esp32s3'),
+    ],
+    indirect=True,
+)
+def test_service_discovery_of_Thread_device(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+    br = dut[2]
+    cli  = dut[1]
+    assert Init_interface
+    assert Init_avahi
+    dut[0].serial.stop_redirect_thread()
+
+    dataset = '-1'
+    ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
+    ocf.wait(cli, 3)
+    flag = False
+    try:
+        assert ocf.is_joined_wifi_network(br)
+        command = 'avahi-browse -rt _testyyy._udp'
+        out_str = subprocess.getoutput(command)
+        print('avahi-browse:\n', str(out_str))
+        assert 'myTest' not in str(out_str)
+        hostname = 'myTest'
+        command = 'srp client host name ' + hostname
+        cli.write(command)
+        cli.expect('Done', timeout=5)
+        cli_global_unicast_addr = ocf.get_global_unicast_addr(cli, br)
+        print('cli_global_unicast_addr', cli_global_unicast_addr)
+        command = 'srp client host address ' + str(cli_global_unicast_addr)
+        cli.write(command)
+        cli.expect('Done', timeout=5)
+        port = '12348'
+        command = 'srp client service add my-service _testyyy._udp ' + port
+        cli.write(command)
+        cli.expect('Done', timeout=5)
+        cli.write('srp client autostart enable')
+        cli.expect('Done', timeout=5)
+        ocf.wait(cli, 3)
+        command = 'avahi-browse -rt _testyyy._udp'
+        out_str = subprocess.getoutput(command)
+        print('avahi-browse:\n', str(out_str))
+        assert 'myTest' in str(out_str)
+        flag = True
+    finally:
+        br.write('factoryreset')
+        cli.write('factoryreset')
+        time.sleep(3)
+        assert flag
+
+
+# Case 6: discover dervice published by Wi-Fi device
+@pytest.mark.esp32s3
+@pytest.mark.esp32h4
+@pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.parametrize(
+    'port, config, count, app_path, beta_target, target', [
+        ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
+         f'{os.path.join(os.path.dirname(__file__), "ot_rcp")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_cli")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_br")}',
+         'esp32h2beta2|esp32h2beta2|esp32s3', 'esp32h4|esp32h4|esp32s3'),
+    ],
+    indirect=True,
+)
+def test_service_discovery_of_WiFi_device(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+    br = dut[2]
+    cli  = dut[1]
+    assert Init_interface
+    assert Init_avahi
+    dut[0].serial.stop_redirect_thread()
+
+    dataset = '-1'
+    ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
+    ocf.wait(cli, 3)
+    flag = False
+    try:
+        assert ocf.is_joined_wifi_network(br)
+        br_global_unicast_addr = ocf.get_global_unicast_addr(br, br)
+        command = 'dns config ' + br_global_unicast_addr
+        ocf.clean_buffer(cli)
+        cli.write(command)
+        cli.expect('Done', timeout=5)
+        ocf.wait(cli, 1)
+        command = 'dns resolve FA000123.default.service.arpa.'
+        ocf.clean_buffer(cli)
+        cli.write(command)
+        cli.expect('Error', timeout=15)
+        domain_name = ocf.get_domain()
+        print('domain name is: ', domain_name)
+        command = 'dns resolve ' + domain_name + '.default.service.arpa.'
+        ocf.clean_buffer(cli)
+        cli.write(command)
+        cli.expect('TTL', timeout=10)
+        cli.expect('Done', timeout=10)
+        ocf.clean_buffer(cli)
+        cli.write('dns browse _testxxx._udp.default.service.arpa')
+        tmp = cli.expect(pexpect.TIMEOUT, timeout=5)
+        assert 'Port:12347' not in str(tmp)
+        ocf.host_publish_service()
+        ocf.wait(cli, 5)
+        ocf.clean_buffer(cli)
+        cli.write('dns browse _testxxx._udp.default.service.arpa')
+        tmp = cli.expect(pexpect.TIMEOUT, timeout=5)
+        assert 'response for _testxxx' in str(tmp)
+        assert 'Port:12347' in str(tmp)
+        ocf.clean_buffer(cli)
+        cli.write('dns service testxxx _testxxx._udp.default.service.arpa.')
+        tmp = cli.expect(pexpect.TIMEOUT, timeout=5)
+        assert 'response for testxxx' in str(tmp)
+        assert 'Port:12347' in str(tmp)
+        flag = True
+    finally:
+        ocf.host_close_service()
+        br.write('factoryreset')
+        cli.write('factoryreset')
+        time.sleep(3)
+        assert flag
+
+
+# Case 7: ICMP communication via NAT64
+@pytest.mark.esp32s3
+@pytest.mark.esp32h4
+@pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.parametrize(
+    'port, config, count, app_path, beta_target, target', [
+        ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
+         f'{os.path.join(os.path.dirname(__file__), "ot_rcp")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_cli")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_br")}',
+         'esp32h2beta2|esp32h2beta2|esp32s3', 'esp32h4|esp32h4|esp32s3'),
+    ],
+    indirect=True,
+)
+def test_ICMP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+    br = dut[2]
+    cli  = dut[1]
+    assert Init_interface
+    dut[0].serial.stop_redirect_thread()
+
+    dataset = '-1'
+    ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
+    flag = False
+    try:
+        assert ocf.is_joined_wifi_network(br)
+        host_ipv4_address = ocf.get_host_ipv4_address()
+        print('host_ipv4_address: ', host_ipv4_address)
+        rx_nums = ocf.ot_ping(cli, str(host_ipv4_address), 5)[1]
+        assert rx_nums != 0
+        flag = True
+    finally:
+        br.write('factoryreset')
+        cli.write('factoryreset')
+        time.sleep(3)
+        assert flag
+
+
+# Case 8: UDP communication via NAT64
+@pytest.mark.esp32s3
+@pytest.mark.esp32h4
+@pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.parametrize(
+    'port, config, count, app_path, beta_target, target', [
+        ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
+         f'{os.path.join(os.path.dirname(__file__), "ot_rcp")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_cli")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_br")}',
+         'esp32h2beta2|esp32h2beta2|esp32s3', 'esp32h4|esp32h4|esp32s3'),
+    ],
+    indirect=True,
+)
+def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+    br = dut[2]
+    cli  = dut[1]
+    assert Init_interface
+    dut[0].serial.stop_redirect_thread()
+
+    dataset = '-1'
+    ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
+    try:
+        assert ocf.is_joined_wifi_network(br)
+        br.write('bbr')
+        br.expect('server16', timeout=5)
+        cli.write('udp open')
+        cli.expect('Done', timeout=5)
+        ocf.wait(cli, 3)
+        host_ipv4_address = ocf.get_host_ipv4_address()
+        print('host_ipv4_address: ', host_ipv4_address)
+        myudp = ocf.udp_parameter('INET4', host_ipv4_address, 5090, '', False, 15.0, b'')
+        udp_mission = threading.Thread(target=ocf.create_host_udp_server, args=(myudp, ))
+        udp_mission.start()
+        start_time = time.time()
+        while not myudp.init_flag:
+            if (time.time() - start_time) > 10:
+                assert False
+        for num in range(0, 3):
+            command = 'udp send ' + host_ipv4_address + ' 5090 hello' + str(num)
+            cli.write(command)
+            cli.expect('Done', timeout=5)
+            ocf.wait(cli, 0.5)
+        while udp_mission.is_alive():
+            time.sleep(1)
+    finally:
+        br.write('factoryreset')
+        cli.write('factoryreset')
+        time.sleep(3)
+    assert b'hello' in myudp.udp_bytes
+
+
+# Case 9: TCP communication via NAT64
+@pytest.mark.esp32s3
+@pytest.mark.esp32h4
+@pytest.mark.i154_multi_dut
+@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.parametrize(
+    'port, config, count, app_path, beta_target, target', [
+        ('/dev/USB_RCP|/dev/USB_CLI|/dev/USB_BR', 'rcp|cli|br', 3,
+         f'{os.path.join(os.path.dirname(__file__), "ot_rcp")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_cli")}'
+         f'|{os.path.join(os.path.dirname(__file__), "ot_br")}',
+         'esp32h2beta2|esp32h2beta2|esp32s3', 'esp32h4|esp32h4|esp32s3'),
+    ],
+    indirect=True,
+)
+def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+    br = dut[2]
+    cli  = dut[1]
+    assert Init_interface
+    dut[0].serial.stop_redirect_thread()
+
+    dataset = '-1'
+    ocf.config_network(br, cli, 'br', 'random', dataset, br, wifi_ssid, wifi_psk)
+    try:
+        assert ocf.is_joined_wifi_network(br)
+        br.write('bbr')
+        br.expect('server16', timeout=5)
+        cli.write('tcpsockclient open')
+        cli.expect('Done', timeout=5)
+        ocf.wait(cli, 3)
+        host_ipv4_address = ocf.get_host_ipv4_address()
+        connect_address = ocf.get_ipv6_from_ipv4(host_ipv4_address, br)
+        print('connect_address is: ', connect_address)
+        mytcp = ocf.tcp_parameter('INET4', host_ipv4_address, 12345, False, False, 15.0, b'')
+        tcp_mission = threading.Thread(target=ocf.create_host_tcp_server, args=(mytcp, ))
+        tcp_mission.start()
+        start_time = time.time()
+        while not mytcp.listen_flag:
+            if (time.time() - start_time) > 10:
+                assert False
+        command = 'tcpsockclient connect ' + connect_address + ' 12345'
+        cli.write(command)
+        cli.expect('Successfully connected', timeout=10)
+        start_time = time.time()
+        while not mytcp.recv_flag:
+            if (time.time() - start_time) > 10:
+                assert False
+        command = 'tcpsockclient send hello'
+        cli.write(command)
+        cli.expect('Done', timeout=5)
+        while tcp_mission.is_alive():
+            time.sleep(1)
+    finally:
+        br.write('factoryreset')
+        cli.write('factoryreset')
+        time.sleep(3)
+    assert b'hello' in mytcp.tcp_bytes