diff --git a/lisa/tools/lspci.py b/lisa/tools/lspci.py
index 23d8f66a1d..969e3c045a 100644
--- a/lisa/tools/lspci.py
+++ b/lisa/tools/lspci.py
@@ -8,12 +8,7 @@
 from lisa.executable import Tool
 from lisa.operating_system import Posix
 from lisa.tools import Echo
-from lisa.util import (
-    LisaException,
-    constants,
-    find_patterns_in_lines,
-    get_matched_str,
-)
+from lisa.util import LisaException, constants, find_patterns_in_lines, get_matched_str
 
 # Example output of lspci command -
 # lspci -m
diff --git a/microsoft/testsuites/network/stress.py b/microsoft/testsuites/network/stress.py
index c0f3d22ae6..985149de95 100644
--- a/microsoft/testsuites/network/stress.py
+++ b/microsoft/testsuites/network/stress.py
@@ -1,5 +1,6 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT license.
+from time import sleep
 from typing import Any, cast
 
 from assertpy import assert_that
@@ -274,6 +275,8 @@ def stress_sriov_with_max_nics_reboot_from_platform(
             for node in environment.nodes.list():
                 start_stop = node.features[StartStop]
                 start_stop.restart()
+            # Add delay to wait for the network interface ready.
+            sleep(120)
             initialize_nic_info(environment)
             sriov_basic_test(environment)
 
@@ -304,6 +307,8 @@ def stress_sriov_with_max_nics_stop_start_from_platform(
                 start_stop = node.features[StartStop]
                 start_stop.stop()
                 start_stop.start()
+            # Add delay to wait for the network interface ready.
+            sleep(120)
             initialize_nic_info(environment)
             sriov_basic_test(environment)