1 files changed, 11 insertions, 0 deletions
diff --git a/smoketest/scripts/cli/test_interfaces_loopback.py b/smoketest/scripts/cli/test_interfaces_loopback.py
index 79225a1bd..e3538fc59 100755
--- a/smoketest/scripts/cli/test_interfaces_loopback.py
+++ b/smoketest/scripts/cli/test_interfaces_loopback.py
@@ -17,6 +17,8 @@
 import unittest
 
 from base_interfaces_test import BasicInterfaceTest
+from netifaces import interfaces
+
 from vyos.validate import is_intf_addr_assigned
 
 class LoopbackInterfaceTest(BasicInterfaceTest.BaseTest):
@@ -27,6 +29,15 @@ class LoopbackInterfaceTest(BasicInterfaceTest.BaseTest):
          self._base_path = ['interfaces', 'loopback']
          self._interfaces = ['lo']
 
+    def tearDown(self):
+        self.session.delete(self._base_path)
+        self.session.commit()
+        del self.session
+
+        # loopback interface must persist!
+        for intf in self._interfaces:
+            self.assertTrue(intf in interfaces())
+
     def test_add_single_ip_address(self):
         super().test_add_single_ip_address()
         for addr in self._loopback_addresses: