diff --git a/backport-testing-add-additional-mocks-to-test_net-tests-1356.patch b/backport-testing-add-additional-mocks-to-test_net-tests-1356.patch
new file mode 100644
index 0000000000000000000000000000000000000000..8a29b6c4335d309cb8c6aa52a03b3db51fdc1e10
--- /dev/null
+++ b/backport-testing-add-additional-mocks-to-test_net-tests-1356.patch
@@ -0,0 +1,40 @@
+From d8f39d79fcdb548252823949a4b24f49a00e8c27 Mon Sep 17 00:00:00 2001
+From: yangzz-97 <70520104+yangzz-97@users.noreply.github.com>
+Date: Thu, 31 Mar 2022 22:00:33 +0800
+Subject: [PATCH] testing: add additional mocks to test_net tests (#1356)
+
+Tests in tests/unittests/test_net.py::TestGetInterfaces were missing
+mocks for bond and failover calls.
+
+Signed-off-by: yangzz-97 <yangzz-97@1162011203@qq.com>
+---
+ tests/unittests/test_net.py | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/tests/unittests/test_net.py b/tests/unittests/test_net.py
+index 6294f4b..ce19498 100644
+--- a/tests/unittests/test_net.py
++++ b/tests/unittests/test_net.py
+@@ -5404,12 +5404,18 @@ class TestGetInterfaces(CiTestCase):
+     def _se_interface_has_own_mac(self, name):
+         return name in self.data['own_macs']
+ 
++    def _se_is_bond(self, name):
++        return name in self.data["bonds"]
++
++    def _se_is_netfailover(self, name):
++        return False
++
+     def _mock_setup(self):
+         self.data = copy.deepcopy(self._data)
+         self.data['devices'] = set(list(self.data['macs'].keys()))
+         mocks = ('get_devicelist', 'get_interface_mac', 'is_bridge',
+                  'interface_has_own_mac', 'is_vlan', 'device_driver',
+-                 'device_devid')
++                 'device_devid', 'is_bond', 'is_netfailover')
+         self.mocks = {}
+         for n in mocks:
+             m = mock.patch('cloudinit.net.' + n,
+-- 
+1.8.3.1
+
diff --git a/cloud-init.spec b/cloud-init.spec
index 939f7e32381b2f7d4f13cc0f3045c26d47b614ea..27955205baea469d8eb7ce804e344de1026c19c8 100644
--- a/cloud-init.spec
+++ b/cloud-init.spec
@@ -1,6 +1,6 @@
 Name: cloud-init
 Version: 21.4
-Release: 2
+Release: 3
 Summary: the defacto multi-distribution package that handles early initialization of a cloud instance.
 License: ASL 2.0 or GPLv3
 URL: http://launchpad.net/cloud-init
@@ -14,6 +14,7 @@ Patch2: bugfix-cloud-init-add-openEuler-os.patch
 Patch3: bugfix-sort-requirements.patch
 Patch4: add-variable-to-forbid-tmp-dir.patch
 Patch5: backport-add-Requires-cloud-init-hotplugd.socket-in-cloud-init-hotplugd.service-file.patch
+Patch6: backport-testing-add-additional-mocks-to-test_net-tests-1356.patch
 
 Patch9000: Fix-the-error-level-logs-displayed-for-the-cloud-init-local-service.patch
 
@@ -125,6 +126,12 @@ fi
 %exclude /usr/share/doc/*
 
 %changelog
+* Fri Apr 1 2022 yangzhuangzhuang <yangzhuangzhuang1@h-partners.com> - 21.4-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:Fix test_net.py testcase fail
+
 * Fri Mar 18 2022 yangzhuangzhuang <yangzhuangzhuang1@h-partners.com> - 21.4-2
 - Type:bugfix
 - ID:NA