@pytest.fixture
    def rif_port_down(duthosts, enum_rand_one_per_hwsku_frontend_hostname, setup, fanouthosts):
        """Shut RIF interface and return neighbor IP address attached to this interface."""
        duthost = duthosts[enum_rand_one_per_hwsku_frontend_hostname]
        loganalyzer = LogAnalyzer(ansible_host=duthost, marker_prefix="drop_packet_rif_port_down")
    
        if not setup["rif_members"]:
            pytest.skip("RIF interface is absent")
        rif_member_iface = list(setup["rif_members"].keys())[0]
    
        vm_name = setup["mg_facts"]["minigraph_neighbors"][rif_member_iface].get("name", None)
        pytest_assert(vm_name, 'Neighbor not found for RIF member "{}"'.format(rif_member_iface))
    
        ip_dst = None
        for item in setup["mg_facts"]["minigraph_bgp"]:
            if item["name"] == vm_name and netaddr.valid_ipv4(item["addr"]):
                ip_dst = item["addr"]
                break
>       pytest_assert(ip_dst, 'Unable to find IP address for neighbor "{}"'.format(vm_name))
E       Failed: Unable to find IP address for neighbor "ARISTA41T1"