diff --git a/smoketest/scripts/cli/test_config_dependency.py b/smoketest/scripts/cli/test_config_dependency.py
index 14e88321a..99e807ac5 100755
--- a/smoketest/scripts/cli/test_config_dependency.py
+++ b/smoketest/scripts/cli/test_config_dependency.py
@@ -1,49 +1,130 @@
 #!/usr/bin/env python3
 # Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) any later version.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 
 import unittest
+from time import sleep
 
-from base_vyostest_shim import VyOSUnitTestSHIM
-
+from vyos.utils.process import is_systemd_service_running
+from vyos.utils.process import cmd
 from vyos.configsession import ConfigSessionError
 
+from base_vyostest_shim import VyOSUnitTestSHIM
+
 
 class TestConfigDep(VyOSUnitTestSHIM.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        # smoketests are run without configd in 1.4; with configd in 1.5
+        # the tests below check behavior under configd:
+        # test_configdep_error checks for regression under configd (T6559)
+        # test_configdep_prio_queue checks resolution under configd (T6671)
+        cls.running_state = is_systemd_service_running('vyos-configd.service')
+
+        if not cls.running_state:
+            cmd('sudo systemctl start vyos-configd.service')
+            # allow time for init
+            sleep(1)
+
+        super(TestConfigDep, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestConfigDep, cls).tearDownClass()
+
+        # return to running_state
+        if not cls.running_state:
+            cmd('sudo systemctl stop vyos-configd.service')
+
     def test_configdep_error(self):
         address_group = 'AG'
         address = '192.168.137.5'
         nat_base = ['nat', 'source', 'rule', '10']
         interface = 'eth1'
 
         self.cli_set(['firewall', 'group', 'address-group', address_group,
                       'address', address])
         self.cli_set(nat_base + ['outbound-interface', 'name', interface])
         self.cli_set(nat_base + ['source', 'group', 'address-group', address_group])
         self.cli_set(nat_base + ['translation', 'address', 'masquerade'])
         self.cli_commit()
 
         self.cli_delete(['firewall'])
         # check error in call to dependent script (nat)
         with self.assertRaises(ConfigSessionError):
             self.cli_commit()
 
         # clean up remaining
         self.cli_delete(['nat'])
         self.cli_commit()
 
+    def test_configdep_prio_queue(self):
+        # confirm that that a dependency (in this case, conntrack ->
+        # conntrack-sync) is not immediately called if the target is
+        # scheduled in the priority queue, indicating that it may require an
+        # intermediate activitation (bond0)
+        bonding_base = ['interfaces', 'bonding']
+        bond_interface = 'bond0'
+        bond_address = '192.0.2.1/24'
+        vrrp_group_base = ['high-availability', 'vrrp', 'group']
+        vrrp_sync_group_base = ['high-availability', 'vrrp', 'sync-group']
+        vrrp_group = 'ETH2'
+        vrrp_sync_group = 'GROUP'
+        conntrack_sync_base = ['service', 'conntrack-sync']
+        conntrack_peer = '192.0.2.77'
+
+        # simple set to trigger in-session conntrack -> conntrack-sync
+        # dependency; note that this is triggered on boot in 1.4 due to
+        # default 'system conntrack modules'
+        self.cli_set(['system', 'conntrack', 'table-size', '524288'])
+
+        self.cli_set(['interfaces', 'ethernet', 'eth2', 'address',
+                      '198.51.100.2/24'])
+
+        self.cli_set(bonding_base + [bond_interface, 'address',
+                                     bond_address])
+        self.cli_set(bonding_base + [bond_interface, 'member', 'interface',
+                                     'eth3'])
+
+        self.cli_set(vrrp_group_base + [vrrp_group, 'address',
+                                        '198.51.100.200/24'])
+        self.cli_set(vrrp_group_base + [vrrp_group, 'hello-source-address',
+                                        '198.51.100.2'])
+        self.cli_set(vrrp_group_base + [vrrp_group, 'interface', 'eth2'])
+        self.cli_set(vrrp_group_base + [vrrp_group, 'priority', '200'])
+        self.cli_set(vrrp_group_base + [vrrp_group, 'vrid', '22'])
+        self.cli_set(vrrp_sync_group_base + [vrrp_sync_group, 'member',
+                                             vrrp_group])
+
+        self.cli_set(conntrack_sync_base + ['failover-mechanism', 'vrrp',
+                                            'sync-group', vrrp_sync_group])
+
+        self.cli_set(conntrack_sync_base + ['interface', bond_interface,
+                                            'peer', conntrack_peer])
+
+        self.cli_commit()
+
+        # clean up
+        self.cli_delete(bonding_base)
+        self.cli_delete(vrrp_group_base)
+        self.cli_delete(vrrp_sync_group_base)
+        self.cli_delete(conntrack_sync_base)
+        self.cli_delete(['interfaces', 'ethernet', 'eth2', 'address'])
+        self.cli_delete(['system', 'conntrack', 'table-size'])
+        self.cli_commit()
+
 if __name__ == '__main__':
     unittest.main(verbosity=2)