passt_attach_detach: add control to select the host interface

The test host might have more than one interface and if passt
is tested against the second or any other than the first,
we need to make sure that the right information is checked.

Signed-off-by: Sebastian Mitterle <smitterl@redhat.com>

libvirt/tests/src/virtual_network/passt/passt_attach_detach.py

@@ -65,17 +65,18 @@ def run(test, params, env):
     scenario = params.get('scenario')
     virsh_uri = params.get('virsh_uri')
     add_iface = 'yes' == params.get('add_iface', 'no')
-    host_ip = utils_net.get_host_ip_address(ip_ver='ipv4')
-    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_iface_index = int(params.get('host_iface_index', 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')
     iface_attrs = eval(params.get('iface_attrs'))
     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['backend']['logFile'] = log_file
     iface_attrs['source']['dev'] = host_iface
@@ -126,8 +127,8 @@ def run(test, params, env):
             session = vm.wait_for_serial_login(timeout=60)
             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)
+            passt.check_default_gw(session, host_iface_index)
+            passt.check_nameserver(session, cleanup=True)
 
             ips = {
                 'outside_ip': outside_ip,
@@ -138,7 +139,8 @@ def run(test, params, env):
             firewalld.stop()
             LOG.debug(f'Service status of firewalld: {firewalld.status()}')
             passt.check_connection(vm, vm_iface,
-                                   ['TCP4', 'TCP6', 'UDP4', 'UDP6'])
+                                   ['TCP4', 'TCP6', 'UDP4', 'UDP6'],
+                                   host_iface_index)
 
             if 'portForwards' in iface_attrs:
                 passt.check_portforward(vm, host_ip, params)