diff --git a/components/esp_eth/test_apps/main/esp_eth_test_apps.c b/components/esp_eth/test_apps/main/esp_eth_test_apps.c
index 392abe105866..c3793e20eeec 100644
--- a/components/esp_eth/test_apps/main/esp_eth_test_apps.c
+++ b/components/esp_eth/test_apps/main/esp_eth_test_apps.c
@@ -94,6 +94,82 @@ TEST_CASE("ethernet io test", "[ethernet]")
     extra_cleanup();
 }
 
+#ifdef CONFIG_TARGET_ETH_PHY_DEVICE_LAN8720
+esp_err_t set_phy_reg_bits(esp_eth_handle_t eth_handle, uint32_t reg_addr, uint32_t bitmask, uint32_t max_attempts)
+{
+    esp_eth_phy_reg_rw_data_t reg = {
+        .reg_addr = reg_addr,
+        .reg_value_p = NULL
+    };
+    uint32_t reg_value, reg_value_rb;
+
+    for (uint32_t i = 0; i < max_attempts; i++) {
+        reg.reg_value_p = &reg_value;
+        esp_err_t ret = esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        reg_value |= bitmask;
+        ret = esp_eth_ioctl(eth_handle, ETH_CMD_WRITE_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        reg.reg_value_p = &reg_value_rb;
+        ret = esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        // Check if the write was successful
+        if ((reg_value_rb & bitmask) == bitmask) {
+            return ESP_OK;
+        }
+        // Add delay only if not the last attempt
+        if (i < max_attempts - 1) {
+            ESP_LOGW(TAG, "Setting PHY register %04"PRIx32" failed, retrying... (attempt %"PRIu32" of %"PRIu32")", reg_addr, i + 1, max_attempts);
+            vTaskDelay(pdMS_TO_TICKS(10));
+        }
+    }
+    return ESP_ERR_TIMEOUT;
+}
+
+esp_err_t clear_phy_reg_bits(esp_eth_handle_t eth_handle, uint32_t reg_addr, uint32_t bitmask, uint32_t max_attempts)
+{
+    esp_eth_phy_reg_rw_data_t reg = {
+        .reg_addr = reg_addr,
+        .reg_value_p = NULL
+    };
+    uint32_t reg_value, reg_value_rb;
+
+    for (uint32_t i = 0; i < max_attempts; i++) {
+        reg.reg_value_p = &reg_value;
+        esp_err_t ret = esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        reg_value &= ~bitmask;
+        ret = esp_eth_ioctl(eth_handle, ETH_CMD_WRITE_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        reg.reg_value_p = &reg_value_rb;
+        ret = esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg);
+        if (ret != ESP_OK) {
+            return ret;
+        }
+        // Check if the write was successful
+        if ((reg_value_rb & bitmask) == 0) {
+            return ESP_OK;
+        }
+        // Add delay only if not the last attempt
+        if (i < max_attempts - 1) {
+            ESP_LOGW(TAG, "Clearing PHY register %04"PRIx32" failed, retrying... (attempt %"PRIu32" of %"PRIu32")", reg_addr, i + 1, max_attempts);
+            vTaskDelay(pdMS_TO_TICKS(10));
+        }
+    }
+    return ESP_ERR_TIMEOUT;
+}
+#endif // CONFIG_TARGET_ETH_PHY_DEVICE_LAN8720
+
 // This test expects autonegotiation to be enabled on the other node.
 TEST_CASE("ethernet io speed/duplex/autonegotiation", "[ethernet]")
 {
@@ -168,17 +244,7 @@ TEST_CASE("ethernet io speed/duplex/autonegotiation", "[ethernet]")
 // Rationale: When the device is in manual 100BASE-TX or 10BASE-T modes with Auto-MDIX enabled, the PHY does not link to a
 //            link partner that is configured for auto-negotiation. See LAN8720 errata for more details.
 #ifdef CONFIG_TARGET_ETH_PHY_DEVICE_LAN8720
-    esp_eth_phy_reg_rw_data_t reg;
-    uint32_t reg_val;
-    reg.reg_addr = 27;
-    reg.reg_value_p = &reg_val;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-    reg_val |= 0x8000;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_WRITE_PHY_REG, &reg));
-    uint32_t reg_val_act;
-    reg.reg_value_p = &reg_val_act;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-    TEST_ASSERT_EQUAL(reg_val, reg_val_act);
+    TEST_ESP_OK(set_phy_reg_bits(eth_handle, 27, 0x8000, 3));
 #endif
 
     // start the driver and wait for connection establish
@@ -263,13 +329,7 @@ TEST_CASE("ethernet io speed/duplex/autonegotiation", "[ethernet]")
 // *** LAN8720 deviation ***
 // Rationale: See above
 #ifdef CONFIG_TARGET_ETH_PHY_DEVICE_LAN8720
-    reg.reg_value_p = &reg_val;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-    reg_val &= ~0x8000;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_WRITE_PHY_REG, &reg));
-    reg.reg_value_p = &reg_val_act;
-    TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-    TEST_ASSERT_EQUAL(reg_val, reg_val_act);
+    TEST_ESP_OK(clear_phy_reg_bits(eth_handle, 27, 0x8000, 3));
 #endif
 
     esp_eth_start(eth_handle);
@@ -568,17 +628,7 @@ TEST_CASE("ethernet start/stop stress test with IP stack", "[ethernet]")
 // Rationale: When the device is in manual 100BASE-TX or 10BASE-T modes with Auto-MDIX enabled, the PHY does not link to a
 //            link partner that is configured for auto-negotiation. See LAN8720 errata for more details.
 #ifdef CONFIG_TARGET_ETH_PHY_DEVICE_LAN8720
-            esp_eth_phy_reg_rw_data_t reg;
-            uint32_t reg_val;
-            reg.reg_addr = 27;
-            reg.reg_value_p = &reg_val;
-            TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-            reg_val |= 0x8000;
-            TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_WRITE_PHY_REG, &reg));
-            uint32_t reg_val_act;
-            reg.reg_value_p = &reg_val_act;
-            TEST_ESP_OK(esp_eth_ioctl(eth_handle, ETH_CMD_READ_PHY_REG, &reg));
-            TEST_ASSERT_EQUAL(reg_val, reg_val_act);
+            TEST_ESP_OK(set_phy_reg_bits(eth_handle, 27, 0x8000, 3));
 #endif
         }
         for (int i = 0; i < 10; i++) {
diff --git a/examples/openthread/ot_ci_function.py b/examples/openthread/ot_ci_function.py
index 0c438e9f601c..bc32af980cb7 100644
--- a/examples/openthread/ot_ci_function.py
+++ b/examples/openthread/ot_ci_function.py
@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: Unlicense OR CC0-1.0
 # !/usr/bin/env python3
 # this file defines some functions for testing cli and br under pytest framework
+import logging
 import os
 import re
 import socket
@@ -10,6 +11,7 @@
 import time
 from functools import wraps
 from typing import Callable
+from typing import Optional
 from typing import Tuple
 
 import netifaces
@@ -19,19 +21,33 @@
 
 
 def extract_address(
-    command: str, pattern: str, default_return: str = ''
+    command: str,
+    pattern: str,
+    default_return: str = '',
+    retries: int = 3,
+    delay: int = 2,
 ) -> Callable[[Callable[[str], str]], Callable[[IdfDut], str]]:
     def decorator(func: Callable[[str], str]) -> Callable[[IdfDut], str]:
         @wraps(func)
         def wrapper(dut: IdfDut) -> str:
-            clean_buffer(dut)
-            execute_command(dut, command)
-            try:
-                result = dut.expect(pattern, timeout=5)[1].decode()
-            except Exception as e:
-                print(f'Error: {e}')
-                return default_return
-            return func(result)
+            # requires Python3.10
+            # last_exception: Exception | None = None
+            last_exception: Optional[Exception] = None
+            for attempt in range(1, retries + 1):
+                try:
+                    clean_buffer(dut)
+                    execute_command(dut, command)
+                    result = dut.expect(pattern, timeout=5)[1].decode()
+                    return func(result)
+                except Exception as e:
+                    logging.exception(f'[{command}] Attempt {attempt}/{retries} failed: {e}')
+                    last_exception = e
+                    if attempt < retries:
+                        time.sleep(delay)
+
+            if last_exception:
+                logging.exception(f'[{command}] Giving up after {retries} retries.')
+            return default_return
 
         return wrapper
 
@@ -152,7 +168,7 @@ def getDeviceRole(dut: IdfDut) -> str:
     wait(dut, 1)
     execute_command(dut, 'state')
     role = dut.expect(r'\W+(\w+)\W+Done', timeout=5)[1].decode()
-    print(role)
+    logging.info(role)
     return str(role)
 
 
@@ -173,6 +189,12 @@ def init_thread(dut: IdfDut) -> None:
     reset_thread(dut)
 
 
+def stop_thread(dut: IdfDut) -> None:
+    execute_command(dut, 'thread stop')
+    dut.expect('disabled', timeout=20)
+    reset_thread(dut)
+
+
 def reset_thread(dut: IdfDut) -> None:
     execute_command(dut, 'factoryreset')
     dut.expect('OpenThread attached to netif', timeout=20)
@@ -180,28 +202,28 @@ def reset_thread(dut: IdfDut) -> None:
     clean_buffer(dut)
 
 
+def hardreset_dut(dut: IdfDut) -> None:
+    dut.serial.hard_reset()
+    time.sleep(5)
+    execute_command(dut, 'factoryreset')
+
+
 # get the mleid address of the thread
-def get_mleid_addr(dut: IdfDut) -> str:
-    dut_adress = ''
-    execute_command(dut, 'ipaddr mleid')
-    dut_adress = dut.expect(r'\n((?:\w+:){7}\w+)\r', timeout=5)[1].decode()
-    return dut_adress
+@extract_address('ipaddr mleid', r'\n((?:\w+:){7}\w+)\r')
+def get_mleid_addr(addr: str) -> str:
+    return addr
 
 
 # get the rloc address of the thread
-def get_rloc_addr(dut: IdfDut) -> str:
-    dut_adress = ''
-    execute_command(dut, 'ipaddr rloc')
-    dut_adress = dut.expect(r'\n((?:\w+:){7}\w+)\r', timeout=5)[1].decode()
-    return dut_adress
+@extract_address('ipaddr rloc', r'\n((?:\w+:){7}\w+)\r')
+def get_rloc_addr(addr: str) -> str:
+    return addr
 
 
 # get the linklocal address of the thread
-def get_linklocal_addr(dut: IdfDut) -> str:
-    dut_adress = ''
-    execute_command(dut, 'ipaddr linklocal')
-    dut_adress = dut.expect(r'\n((?:\w+:){7}\w+)\r', timeout=5)[1].decode()
-    return dut_adress
+@extract_address('ipaddr linklocal', r'\n((?:\w+:){7}\w+)\r')
+def get_linklocal_addr(addr: str) -> str:
+    return addr
 
 
 # get the global unicast address of the thread:
@@ -311,7 +333,7 @@ def get_host_interface_name() -> str:
             interface_name = config.get('interface_name')
             if interface_name:
                 if interface_name == 'eth0':
-                    print(
+                    logging.warning(
                         f"Warning: 'eth0' is not recommended as a valid network interface. "
                         f"Please check and update the 'interface_name' in the configuration file: "
                         f'{config_path}'
@@ -319,9 +341,9 @@ def get_host_interface_name() -> str:
                 else:
                     return str(interface_name)
             else:
-                print("Warning: Configuration file found but 'interface_name' is not defined.")
+                logging.warning("Warning: Configuration file found but 'interface_name' is not defined.")
     except Exception as e:
-        print(f'Error: Failed to read or parse {config_path}. Details: {e}')
+        logging.error(f'Error: Failed to read or parse {config_path}. Details: {e}')
     if 'eth1' in netifaces.interfaces():
         return 'eth1'
 
@@ -339,8 +361,8 @@ def check_if_host_receive_ra(br: IdfDut) -> bool:
     omrprefix = get_omrprefix(br)
     command = 'ip -6 route | grep ' + str(interface_name)
     out_str = subprocess.getoutput(command)
-    print('br omrprefix: ', str(omrprefix))
-    print('host route table:\n', str(out_str))
+    logging.info(f'br omrprefix: {omrprefix}')
+    logging.info(f'host route table:\n {out_str}')
     return str(omrprefix) in str(out_str)
 
 
@@ -405,7 +427,7 @@ def create_host_udp_server(myudp: udp_parameter) -> None:
             AF_INET = socket.AF_INET6
         else:
             AF_INET = socket.AF_INET
-        print('The host start to create udp server!')
+        logging.info('The host start to create udp server!')
         if_index = socket.if_nametoindex(interface_name)
         sock = socket.socket(AF_INET, socket.SOCK_DGRAM)
         sock.bind((myudp.addr, myudp.port))
@@ -418,13 +440,14 @@ def create_host_udp_server(myudp: udp_parameter) -> None:
             )
         sock.settimeout(myudp.timeout)
         myudp.init_flag = True
-        print('The host start to receive message!')
+        logging.info('The host start to receive message!')
         myudp.udp_bytes = (sock.recvfrom(1024))[0]
-        print('The host has received message: ', myudp.udp_bytes)
-    except socket.error:
-        print('The host did not receive message!')
+        udp_str = str(myudp.udp_bytes)
+        logging.info(f'The host has received message: {udp_str}')
+    except OSError:
+        logging.error('The host did not receive message!')
     finally:
-        print('Close the socket.')
+        logging.info('Close the socket.')
         sock.close()
 
 
@@ -439,10 +462,10 @@ def host_udp_send_message(udp_target: udp_parameter) -> None:
         sock.bind(('::', 12350))
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, interface_name.encode())
         sock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_MULTICAST_HOPS, 32)
-        print('Host is sending message')
+        logging.info('Host is sending message')
         sock.sendto(udp_target.udp_bytes, (udp_target.addr, udp_target.port))
-    except socket.error:
-        print('Host cannot send message')
+    except OSError:
+        logging.error('Host cannot send message')
     finally:
         sock.close()
 
@@ -482,13 +505,13 @@ def host_close_service() -> None:
     command = 'ps auxww | grep avahi-publish-s'
     out_bytes = subprocess.check_output(command, shell=True, timeout=5)
     out_str = out_bytes.decode('utf-8')
-    print('host close service avahi status:\n', out_str)
+    logging.info(f'host close service avahi status:\n {out_str}')
     service_info = [line for line in out_str.splitlines() if 'testxxx _testxxx._udp' in line]
     for line in service_info:
-        print('Process:', line)
+        logging.info(f'Process:{line}')
         pid = line.split()[1]
         command = 'kill -9 ' + pid
-        print('kill ', pid)
+        logging.info(f'kill {pid}')
         subprocess.call(command, shell=True, timeout=5)
         time.sleep(1)
 
@@ -521,24 +544,24 @@ def open_host_interface() -> None:
 
 def get_domain() -> str:
     hostname = socket.gethostname()
-    print('hostname is: ', hostname)
+    logging.info(f'hostname is: {hostname}')
     command = 'ps -auxww | grep avahi-daemon | grep running'
     out_str = subprocess.getoutput(command)
-    print('avahi status:\n', out_str)
+    logging.info(f'avahi status:\n {out_str}')
     role = re.findall(r'\[([\w\W]+)\.local\]', str(out_str))[0]
-    print('active host is: ', role)
+    logging.info(f'active host is: {role}')
     return str(role)
 
 
 def flush_ipv6_addr_by_interface() -> None:
     interface_name = get_host_interface_name()
-    print(f'flush ipv6 addr : {interface_name}')
+    logging.info(f'flush ipv6 addr : {interface_name}')
     command_show_addr = f'ip -6 addr show dev {interface_name}'
     command_show_route = f'ip -6 route show dev {interface_name}'
     addr_before = subprocess.getoutput(command_show_addr)
     route_before = subprocess.getoutput(command_show_route)
-    print(f'Before flush, IPv6 addresses: \n{addr_before}')
-    print(f'Before flush, IPv6 routes: \n{route_before}')
+    logging.info(f'Before flush, IPv6 addresses: \n{addr_before}')
+    logging.info(f'Before flush, IPv6 routes: \n{route_before}')
     subprocess.run(['ip', 'link', 'set', interface_name, 'down'])
     subprocess.run(['ip', '-6', 'addr', 'flush', 'dev', interface_name])
     subprocess.run(['ip', '-6', 'route', 'flush', 'dev', interface_name])
@@ -546,8 +569,8 @@ def flush_ipv6_addr_by_interface() -> None:
     time.sleep(5)
     addr_after = subprocess.getoutput(command_show_addr)
     route_after = subprocess.getoutput(command_show_route)
-    print(f'After flush, IPv6 addresses: \n{addr_after}')
-    print(f'After flush, IPv6 routes: \n{route_after}')
+    logging.info(f'After flush, IPv6 addresses: \n{addr_after}')
+    logging.info(f'After flush, IPv6 routes: \n{route_after}')
 
 
 class tcp_parameter:
@@ -576,28 +599,29 @@ def create_host_tcp_server(mytcp: tcp_parameter) -> None:
             AF_INET = socket.AF_INET6
         else:
             AF_INET = socket.AF_INET
-        print('The host start to create a tcp server!')
+        logging.info('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!')
+        logging.info('The tcp server is waiting for connection!')
         sock.settimeout(mytcp.timeout)
         connfd, addr = sock.accept()
-        print('The tcp server connected with ', addr)
+        logging.info(f'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)
+        tcp_str = str(mytcp.tcp_bytes)
+        logging.info(f'The tcp server has received message: {tcp_str}')
 
     except socket.error:
         if mytcp.recv_flag:
-            print('The tcp server did not receive message!')
+            logging.error('The tcp server did not receive message!')
         else:
-            print('The tcp server fail to connect!')
+            logging.error('The tcp server fail to connect!')
     finally:
-        print('Close the socket.')
+        logging.info('Close the socket.')
         sock.close()
 
 
@@ -617,22 +641,19 @@ def decimal_to_hex(decimal_str: str) -> str:
     return hex_str
 
 
-def get_omrprefix(br: IdfDut) -> str:
-    execute_command(br, 'br omrprefix')
-    omrprefix = br.expect(r'Local: ((?:\w+:){4}):/\d+\r', timeout=5)[1].decode()
-    return str(omrprefix)
+@extract_address('br omrprefix', r'Local: ((?:\w+:){4}):/\d+\r')
+def get_omrprefix(addr: str) -> str:
+    return addr
 
 
-def get_onlinkprefix(br: IdfDut) -> str:
-    execute_command(br, 'br onlinkprefix')
-    onlinkprefix = br.expect(r'Local: ((?:\w+:){4}):/\d+\r', timeout=5)[1].decode()
-    return str(onlinkprefix)
+@extract_address('br onlinkprefix', r'Local: ((?:\w+:){4}):/\d+\r')
+def get_onlinkprefix(addr: str) -> str:
+    return addr
 
 
-def get_nat64prefix(br: IdfDut) -> str:
-    execute_command(br, 'br nat64prefix')
-    nat64prefix = br.expect(r'Local: ((?:\w+:){6}):/\d+', timeout=5)[1].decode()
-    return str(nat64prefix)
+@extract_address('br nat64prefix', r'Local: ((?:\w+:){6}):/\d+')
+def get_nat64prefix(addr: str) -> str:
+    return addr
 
 
 def execute_command(dut: IdfDut, command: str, prefix: str = 'ot ') -> None:
@@ -645,3 +666,17 @@ def get_ouput_string(dut: IdfDut, command: str, wait_time: int) -> str:
     tmp = dut.expect(pexpect.TIMEOUT, timeout=wait_time)
     clean_buffer(dut)
     return str(tmp)
+
+
+def wait_for_host_network(host: str = '8.8.8.8', retries: int = 6, interval: int = 10) -> None:
+    for attempt in range(1, retries + 1):
+        try:
+            subprocess.run(['ping', '-c', '1', '-W', '2', host], check=True)
+            logging.info(f'Host network reachable on attempt {attempt}')
+            return
+        except subprocess.CalledProcessError:
+            logging.info(f'Ping attempt {attempt} failed, retrying in {interval} seconds...')
+            if attempt < retries:
+                time.sleep(interval)
+            else:
+                raise RuntimeError(f'Host network is not reachable after {retries} attempts.')
diff --git a/examples/openthread/pytest_otbr.py b/examples/openthread/pytest_otbr.py
index 36b880179387..670f6bd8eed1 100644
--- a/examples/openthread/pytest_otbr.py
+++ b/examples/openthread/pytest_otbr.py
@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: Unlicense OR CC0-1.0
 # !/usr/bin/env python3
 import copy
+import logging
 import os.path
 import random
 import re
@@ -76,7 +77,7 @@
 
 @pytest.fixture(scope='module', name='Init_avahi')
 def fixture_Init_avahi() -> bool:
-    print('Init Avahi')
+    logging.info('Init Avahi')
     ocf.start_avahi()
     time.sleep(10)
     return True
@@ -84,7 +85,7 @@ def fixture_Init_avahi() -> bool:
 
 @pytest.fixture(name='Init_interface')
 def fixture_Init_interface() -> bool:
-    print('Init interface')
+    logging.info('Init interface')
     ocf.flush_ipv6_addr_by_interface()
     # The sleep time is set based on experience; reducing it might cause the host to be unready.
     time.sleep(30)
@@ -109,7 +110,7 @@ def fixture_Init_interface() -> bool:
 # Case 1: Thread network formation and attaching
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -136,7 +137,7 @@ def fixture_Init_interface() -> bool:
     ],
     indirect=True,
 )
-def test_thread_connect(dut:Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_thread_connect(dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli_h2 = dut[1]
     dut[0].serial.stop_redirect_thread()
@@ -164,9 +165,9 @@ def test_thread_connect(dut:Tuple[IdfDut, IdfDut, IdfDut]) -> None:
             rx_nums = ocf.ot_ping(br, cli_mleid_addr, count=5)[1]
             assert rx_nums == 5
     finally:
-        ocf.execute_command(br, 'factoryreset')
         for cli in cli_list:
-            ocf.execute_command(cli, 'factoryreset')
+            ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
@@ -193,7 +194,7 @@ def formBasicWiFiThreadNetwork(br:IdfDut, cli:IdfDut) -> None:
 # Case 2: Bidirectional IPv6 connectivity
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -210,7 +211,7 @@ def formBasicWiFiThreadNetwork(br:IdfDut, cli:IdfDut) -> None:
     ],
     indirect=True,
 )
-def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_Bidirectional_IPv6_connectivity(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -220,10 +221,10 @@ def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut,
     try:
         assert ocf.is_joined_wifi_network(br)
         cli_global_unicast_addr = ocf.get_global_unicast_addr(cli, br)
-        print('cli_global_unicast_addr', cli_global_unicast_addr)
+        logging.info(f'cli_global_unicast_addr {cli_global_unicast_addr}')
         command = 'ping ' + str(cli_global_unicast_addr) + ' -c 10'
         out_str = subprocess.getoutput(command)
-        print('ping result:\n', str(out_str))
+        logging.info(f'ping result:\n{out_str}')
         role = re.findall(r' (\d+)%', str(out_str))[0]
         assert role != '100'
         interface_name = ocf.get_host_interface_name()
@@ -231,22 +232,24 @@ def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut,
         out_bytes = subprocess.check_output(command, shell=True, timeout=5)
         out_str = out_bytes.decode('utf-8')
         onlinkprefix = ocf.get_onlinkprefix(br)
-        host_global_unicast_addr = re.findall(r'\W+(%s(?:\w+:){3}\w+)\W+' % onlinkprefix, str(out_str))
+        pattern = rf'\W+({onlinkprefix}(?:\w+:){{3}}\w+)\W+'
+        host_global_unicast_addr = re.findall(pattern, out_str)
         rx_nums = 0
         for ip_addr in host_global_unicast_addr:
-            txrx_nums = ocf.ot_ping(cli, str(ip_addr), count=5)
+            txrx_nums = ocf.ot_ping(cli, str(ip_addr), count=10)
             rx_nums = rx_nums + int(txrx_nums[1])
+        logging.debug(f'rx_nums: {rx_nums}')
         assert rx_nums != 0
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 3: Multicast forwarding from Wi-Fi to Thread network
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -263,7 +266,7 @@ def test_Bidirectional_IPv6_connectivity(Init_interface:bool, dut: Tuple[IdfDut,
     ],
     indirect=True,
 )
-def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_multicast_forwarding_A(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -278,7 +281,7 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
         interface_name = ocf.get_host_interface_name()
         command = 'ping -I ' + str(interface_name) + ' -t 64 ff04::125 -c 10'
         out_str = subprocess.getoutput(command)
-        print('ping result:\n', str(out_str))
+        logging.info(f'ping result:\n{out_str}')
         role = re.findall(r' (\d+)%', str(out_str))[0]
         assert role != '100'
         ocf.execute_command(cli, 'udp open')
@@ -292,15 +295,15 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
         ocf.execute_command(cli, 'udp close')
         cli.expect('Done', timeout=5)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 4: Multicast forwarding from Thread to Wi-Fi network
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -317,7 +320,7 @@ def test_multicast_forwarding_A(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
     ],
     indirect=True,
 )
-def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_multicast_forwarding_B(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -346,8 +349,8 @@ def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
         while udp_mission.is_alive():
             time.sleep(1)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
     assert b'hello' in myudp.udp_bytes
 
@@ -355,7 +358,7 @@ def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
 # Case 5: discover dervice published by Thread device
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -372,7 +375,9 @@ def test_multicast_forwarding_B(Init_interface:bool, dut: Tuple[IdfDut, IdfDut,
     ],
     indirect=True,
 )
-def test_service_discovery_of_Thread_device(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+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
@@ -384,14 +389,14 @@ def test_service_discovery_of_Thread_device(Init_interface:bool, Init_avahi:bool
         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))
+        logging.info(f'avahi-browse:\n{out_str}')
         assert 'myTest' not in str(out_str)
         hostname = 'myTest'
         command = 'srp client host name ' + hostname
         ocf.execute_command(cli, 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)
+        logging.info(f'cli_global_unicast_addr {cli_global_unicast_addr}')
         command = 'srp client host address ' + str(cli_global_unicast_addr)
         ocf.execute_command(cli, command)
         cli.expect('Done', timeout=5)
@@ -404,18 +409,18 @@ def test_service_discovery_of_Thread_device(Init_interface:bool, Init_avahi:bool
         ocf.wait(cli, 3)
         command = 'avahi-browse -rt _testyyy._udp'
         out_str = subprocess.getoutput(command)
-        print('avahi-browse:\n', str(out_str))
+        logging.info(f'avahi-browse:\n {out_str}')
         assert 'myTest' in str(out_str)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 6: discover dervice published by Wi-Fi device
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -432,7 +437,9 @@ def test_service_discovery_of_Thread_device(Init_interface:bool, Init_avahi:bool
     ],
     indirect=True,
 )
-def test_service_discovery_of_WiFi_device(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+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
@@ -448,7 +455,7 @@ def test_service_discovery_of_WiFi_device(Init_interface:bool, Init_avahi:bool,
         cli.expect('Done', timeout=5)
         ocf.wait(cli, 1)
         domain_name = ocf.get_domain()
-        print('domain name is: ', domain_name)
+        logging.info(f'domain name is: {domain_name}')
         command = 'dns resolve ' + domain_name + '.default.service.arpa.'
 
         ocf.execute_command(cli, command)
@@ -476,15 +483,15 @@ def test_service_discovery_of_WiFi_device(Init_interface:bool, Init_avahi:bool,
     finally:
         ocf.host_close_service()
         sp.terminate()
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 7: ICMP communication via NAT64
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -501,7 +508,7 @@ def test_service_discovery_of_WiFi_device(Init_interface:bool, Init_avahi:bool,
     ],
     indirect=True,
 )
-def test_ICMP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_ICMP_NAT64(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -511,19 +518,19 @@ def test_ICMP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) ->
     try:
         assert ocf.is_joined_wifi_network(br)
         host_ipv4_address = ocf.get_host_ipv4_address()
-        print('host_ipv4_address: ', host_ipv4_address)
+        logging.info(f'host_ipv4_address: {host_ipv4_address}')
         rx_nums = ocf.ot_ping(cli, str(host_ipv4_address), count=5)[1]
         assert rx_nums != 0
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 8: UDP communication via NAT64
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -540,7 +547,7 @@ def test_ICMP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) ->
     ],
     indirect=True,
 )
-def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_UDP_NAT64(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -555,7 +562,7 @@ def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
         cli.expect('Done', timeout=5)
         ocf.wait(cli, 3)
         host_ipv4_address = ocf.get_host_ipv4_address()
-        print('host_ipv4_address: ', host_ipv4_address)
+        logging.info(f'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()
@@ -571,8 +578,8 @@ def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
         while udp_mission.is_alive():
             time.sleep(1)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
     assert b'hello' in myudp.udp_bytes
 
@@ -580,7 +587,7 @@ def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
 # Case 9: TCP communication via NAT64
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -597,7 +604,7 @@ def test_UDP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
     ],
     indirect=True,
 )
-def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_TCP_NAT64(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -613,7 +620,7 @@ def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
         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)
+        logging.info(f'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()
@@ -634,8 +641,8 @@ def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
         while tcp_mission.is_alive():
             time.sleep(1)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
     assert b'hello' in mytcp.tcp_bytes
 
@@ -644,6 +651,7 @@ def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
 @pytest.mark.esp32h2
 @pytest.mark.esp32c6
 @pytest.mark.openthread_sleep
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -671,6 +679,7 @@ def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
 def test_ot_sleepy_device(dut: Tuple[IdfDut, IdfDut]) -> None:
     leader = dut[0]
     sleepy_device = dut[1]
+    ocf.hardreset_dut(sleepy_device)
     fail_info = re.compile(r'Core\W*?\d\W*?register dump')
     try:
         ocf.init_thread(leader)
@@ -697,13 +706,14 @@ def test_ot_sleepy_device(dut: Tuple[IdfDut, IdfDut]) -> None:
         assert not bool(fail_info.search(str(output)))
     finally:
         ocf.execute_command(leader, 'factoryreset')
+        ocf.hardreset_dut(sleepy_device)
         time.sleep(3)
 
 
 # Case 11: Basic startup Test of BR
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -738,14 +748,14 @@ def test_basic_startup(dut: Tuple[IdfDut, IdfDut]) -> None:
         br.expect('Done', timeout=5)
         assert ocf.wait_for_join(br, 'leader')
     finally:
-        ocf.execute_command(br, 'factoryreset')
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 12: Curl a website via DNS and NAT64
 @pytest.mark.supported_targets
 @pytest.mark.openthread_bbr
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -762,7 +772,7 @@ def test_basic_startup(dut: Tuple[IdfDut, IdfDut]) -> None:
     ],
     indirect=True,
 )
-def test_NAT64_DNS(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_NAT64_DNS(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -770,24 +780,25 @@ def test_NAT64_DNS(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
 
     formBasicWiFiThreadNetwork(br, cli)
     try:
+        ocf.wait_for_host_network()
         ocf.execute_command(br, 'bbr')
         br.expect('server16', timeout=5)
         ocf.execute_command(cli, 'dns64server 8.8.8.8')
         cli.expect('Done', timeout=5)
         command = 'curl http://www.espressif.com'
         message = ocf.get_ouput_string(cli, command, 10)
-        assert '<html>' in str(message)
+        assert 'html' in str(message)
         assert '301 Moved Permanently' in str(message)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 13: Meshcop discovery of Border Router
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -803,7 +814,7 @@ def test_NAT64_DNS(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
     ],
     indirect=True,
 )
-def test_br_meshcop(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, IdfDut]) -> None:
+def test_br_meshcop(Init_interface: bool, Init_avahi: bool, dut: Tuple[IdfDut, IdfDut]) -> None:
     br = dut[1]
     assert Init_interface
     assert Init_avahi
@@ -829,9 +840,9 @@ def test_br_meshcop(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, Idf
         except subprocess.CalledProcessError as e:
             output_bytes = e.stdout
         finally:
-            print('out_bytes: ', output_bytes)
+            logging.info(f'out_bytes: {output_bytes!r}')
             output_str = str(output_bytes)
-            print('out_str: ', output_str)
+            logging.info(f'out_str: {output_str}')
 
             assert 'hostname = [esp-ot-br.local]' in str(output_str)
             assert ('address = [' + ipv4_address + ']') in str(output_str)
@@ -842,14 +853,14 @@ def test_br_meshcop(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, Idf
             assert 'vn=OpenThread' in str(output_str)
             assert 'rv=1' in str(output_str)
     finally:
-        ocf.execute_command(br, 'factoryreset')
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 14: Curl a website over HTTPS via DNS and NAT64
 @pytest.mark.supported_targets
 @pytest.mark.openthread_bbr
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -866,7 +877,7 @@ def test_br_meshcop(Init_interface:bool, Init_avahi:bool, dut: Tuple[IdfDut, Idf
     ],
     indirect=True,
 )
-def test_https_NAT64_DNS(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
+def test_https_NAT64_DNS(Init_interface: bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> None:
     br = dut[2]
     cli  = dut[1]
     assert Init_interface
@@ -874,22 +885,23 @@ def test_https_NAT64_DNS(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]
 
     formBasicWiFiThreadNetwork(br, cli)
     try:
+        ocf.wait_for_host_network()
         ocf.execute_command(cli, 'dns64server 8.8.8.8')
         cli.expect('Done', timeout=5)
         command = 'curl https://www.example.com/'
         message = ocf.get_ouput_string(cli, command, 20)
-        assert '<html>' in str(message)
-        assert 'This domain is for use in illustrative examples in documents' in str(message)
+        assert 'html' in str(message)
+        assert 'This domain is for use in' in str(message)
     finally:
-        ocf.execute_command(br, 'factoryreset')
-        ocf.execute_command(cli, 'factoryreset')
+        ocf.stop_thread(cli)
+        ocf.stop_thread(br)
         time.sleep(3)
 
 
 # Case 15: Thread network formation and attaching with TREL
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -935,16 +947,16 @@ def test_trel_connect(dut: Tuple[IdfDut, IdfDut]) -> None:
             rx_nums = ocf.ot_ping(trel_s3, trel_mleid_addr, count=10)[1]
             assert rx_nums > 5
     finally:
-        ocf.execute_command(trel_s3, 'factoryreset')
         for trel in trel_list:
-            ocf.execute_command(trel, 'factoryreset')
+            ocf.stop_thread(trel)
+        ocf.stop_thread(trel_s3)
         time.sleep(3)
 
 
 # Case 16: Thread network BR lib check
 @pytest.mark.supported_targets
 @pytest.mark.openthread_br
-@pytest.mark.flaky(reruns=1, reruns_delay=1)
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -974,6 +986,7 @@ def test_br_lib_check(dut: Tuple[IdfDut, IdfDut]) -> None:
 
 # Case 17: SSED test
 @pytest.mark.openthread_sleep
+@pytest.mark.flaky(reruns=1, reruns_delay=5)
 @pytest.mark.parametrize(
     'config, count, app_path, target, port',
     [
@@ -1002,6 +1015,7 @@ def test_ot_ssed_device(dut: Tuple[IdfDut, IdfDut]) -> None:
     leader = dut[0]
     ssed_device = dut[1]
     try:
+        ocf.hardreset_dut(ssed_device)
         # CI device must have external XTAL to run SSED case, we will check this here first
         ssed_device.expect('32k XTAL in use', timeout=10)
         ocf.init_thread(leader)
@@ -1041,4 +1055,5 @@ def test_ot_ssed_device(dut: Tuple[IdfDut, IdfDut]) -> None:
         ocf.ping_and_check(dut=leader, target=ssed_address, tx_total=10, timeout=6)
     finally:
         ocf.execute_command(leader, 'factoryreset')
+        ocf.hardreset_dut(ssed_device)
         time.sleep(3)