smoketest: mirror: T3169: re-add mirror / SPAN test case

Commit ef629504d4 ("smoketest: mirror: drop testcase") dropped the smoketests
entirely as they have been programmed in a wrong way leading to outages on live
development systems which used dummy interfaces for management traffic.

1 files changed, 4 insertions, 5 deletions

diff --git a/smoketest/scripts/cli/test_interfaces_ethernet.py b/smoketest/scripts/cli/test_interfaces_ethernet.py
index 2d0a4827d..3c4796283 100755
--- a/smoketest/scripts/cli/test_interfaces_ethernet.py
+++ b/smoketest/scripts/cli/test_interfaces_ethernet.py
@@ -35,16 +35,13 @@ def get_wpa_supplicant_value(interface, key):
 
 class EthernetInterfaceTest(BasicInterfaceTest.BaseTest):
     def setUp(self):
-        super().setUp()
-
-        self._base_path = ['interfaces', 'ethernet']
         self._test_ip = True
         self._test_mtu = True
         self._test_vlan = True
         self._test_qinq = True
         self._test_ipv6 = True
-        self._test_mirror = True
-        self._interfaces = []
+        self._base_path = ['interfaces', 'ethernet']
+        self._mirror_interfaces = ['dum21354']
 
         # we need to filter out VLAN interfaces identified by a dot (.)
         # in their name - just in case!
@@ -66,6 +63,8 @@ class EthernetInterfaceTest(BasicInterfaceTest.BaseTest):
                 mac = read_file(f'/sys/class/net/{interface}/address')
             self._macs[interface] = mac
 
+        super().setUp()
+
 
     def tearDown(self):
         for interface in self._interfaces: