diff --git a/libvirt/tests/cfg/virtual_network/passt/passt_function.cfg b/libvirt/tests/cfg/virtual_network/passt/passt_function.cfg
index e8103697ea..78468e5eb6 100644
--- a/libvirt/tests/cfg/virtual_network/passt/passt_function.cfg
+++ b/libvirt/tests/cfg/virtual_network/passt/passt_function.cfg
@@ -22,6 +22,9 @@
             iface_attrs = {'model': 'virtio', 'acpi': {'index': '1'}, 'type_name': 'user', 'backend': {'type': 'passt'}, 'source': {'dev': host_iface}}
             vm_iface = eno1
             vm_ping_outside = pass
+            s390-virtio:
+                iface_attrs = {'model': 'virtio', 'type_name': 'user', 'backend': {'type': 'passt'}, 'source': {'dev': host_iface}}
+                vm_iface = enc1
         - ip_portfw:
             ipv6_prefix = 128
             alias = {'name': 'ua-c87b89ff-b769-4abc-921f-30d42d7aec5b'}
@@ -30,6 +33,8 @@
             vm_iface = eno1
             vm_ping_outside = pass
             vm_ping_host_public = pass
+            s390-virtio:
+                vm_iface = enc1
             variants:
                 - ip_addr:
                     portForward_0 = {'attrs': {'proto': 'tcp'}, 'ranges': [{'start': '31339', 'to': '41339'}]}
@@ -54,8 +59,8 @@
                     portForward_0 = {'attrs': {'proto': 'tcp', 'dev': host_iface}, 'ranges': [{'start': '31339', 'to': '41339'}]}
                     portForward_1 = {'attrs': {'proto': 'udp', 'dev': host_iface}, 'ranges': [{'start': '2025'}]}
                     portForwards = [${portForward_0}, ${portForward_1}]
-                    tcp_port_list = [f'*%{vm_iface}:31339']
-                    udp_port_list = [f'0.0.0.0%{vm_iface}:2025', f'[::]%{vm_iface}:2025']
+                    tcp_port_list = [f'*%{host_iface}:31339']
+                    udp_port_list = [f'0.0.0.0%{host_iface}:2025', f'[::]%{host_iface}:2025']
                     conn_check_args_1 = ('TCP4', host_ip, 31339, 41339, True, None)
                     conn_check_args_2 = ('TCP6', host_ip_v6, 31339, 41339, True, None)
                     conn_check_args_3 = ('UDP4', host_ip, 2025, 2025, True, None)
@@ -65,9 +70,11 @@
                     portForward_1 = {'attrs': {'proto': 'udp', 'address': host_ip, 'dev': host_iface}, 'ranges': [{'start': '2025'}]}
                     portForward_2 = {'attrs': {'proto': 'tcp', 'address': host_ip_v6, 'dev': host_iface}, 'ranges': [{'start': '51339'}]}
                     portForwards = [${portForward_0}, ${portForward_1}, ${portForward_2}]
-                    tcp_port_list = [f'{host_ip}%{vm_iface}:31339', f'[{host_ip_v6}]%{vm_iface}:51339']
-                    udp_port_list = [f'{host_ip}%{vm_iface}:2025']
+                    tcp_port_list = [f'{host_ip}%{host_iface}:31339', f'[{host_ip_v6}]%{host_iface}:51339']
+                    udp_port_list = [f'{host_ip}%{host_iface}:2025']
                     conn_check_args_1 = ('TCP4', host_ip, 31339, 41339, True, None)
                     conn_check_args_2 = ('UDP4', host_ip, 2025, 2025, True, None)
                     conn_check_args_3 = ('TCP6', host_ip_v6, 51339, 51339, True, None)
             iface_attrs = {'model': 'virtio', 'acpi': {'index': '1'}, 'ips': ${ips}, 'backend': ${backend}, 'source': {'dev': host_iface}, 'alias': ${alias}, 'type_name': 'user', 'portForwards': ${portForwards}}
+            s390-virtio:
+                iface_attrs = {'model': 'virtio', 'ips': ${ips}, 'backend': ${backend}, 'source': {'dev': host_iface}, 'alias': ${alias}, 'type_name': 'user', 'portForwards': ${portForwards}}
diff --git a/libvirt/tests/src/virtual_network/passt/passt_function.py b/libvirt/tests/src/virtual_network/passt/passt_function.py
index b9d65d2535..ef57ffc606 100644
--- a/libvirt/tests/src/virtual_network/passt/passt_function.py
+++ b/libvirt/tests/src/virtual_network/passt/passt_function.py
@@ -52,17 +52,17 @@ def run(test, params, env):
                                       test_passwd)
         host_session.close()
 
-    host_ip = utils_net.get_host_ip_address(ip_ver='ipv4')
-    params['host_ip_v6'] = host_ip_v6 = utils_net.get_host_ip_address(
-        ip_ver='ipv6')
+    host_iface = params.get('host_iface')
+    host_iface = host_iface if host_iface else utils_net.get_net_if(
+        state="UP")[0]
+    host_ip = utils_net.get_ip_address_by_interface(host_iface, ip_ver='ipv4')
+    host_ip_v6 = utils_net.get_ip_address_by_interface(host_iface, ip_ver='ipv6')
+    params['host_ip_v6'] = host_ip_v6
     params['socket_dir'] = socket_dir = eval(params.get('socket_dir'))
     params['proc_checks'] = proc_checks = eval(params.get('proc_checks', '{}'))
     vm_iface = params.get('vm_iface', 'eno1')
     mtu = params.get('mtu')
     outside_ip = params.get('outside_ip')
-    host_iface = params.get('host_iface')
-    host_iface = host_iface if host_iface else utils_net.get_net_if(
-        state="UP")[0]
     log_file = f'/run/user/{user_id}/passt.log'
     iface_attrs = eval(params.get('iface_attrs'))
     iface_attrs['backend']['logFile'] = log_file
@@ -97,7 +97,7 @@ def run(test, params, env):
             test.fail(f'Logfile of passt "{log_file}" not created')
 
         session = vm.wait_for_serial_login(timeout=60)
-        passt.check_vm_ip(iface_attrs, session, host_iface)
+        passt.check_vm_ip(iface_attrs, session, host_iface, vm_iface)
         passt.check_vm_mtu(session, vm_iface, mtu)
         passt.check_default_gw(session)
         passt.check_nameserver(session)
@@ -111,10 +111,12 @@ def run(test, params, env):
 
         firewalld.stop()
         LOG.debug(f'Status of firewalld: {firewalld.status()}')
-        passt.check_connection(vm, vm_iface, ['TCP4', 'TCP6', 'UDP4', 'UDP6'])
+        passt.check_connection(vm, vm_iface,
+                               ['TCP4', 'TCP6', 'UDP4', 'UDP6'],
+                               host_iface)
 
         if 'portForwards' in iface_attrs:
-            passt.check_portforward(vm, host_ip, params)
+            passt.check_portforward(vm, host_ip, params, host_iface)
 
         vm_sess = vm.wait_for_serial_login(timeout=60)
         vm_sess.cmd('systemctl start firewalld')