def METHOD_NAME(vm_name, mac, virsh_ins, test, expect=True):
    domif = virsh_ins.domiflist(vm_name, **VIRSH_ARGS).stdout_text
    found = mac in domif
    msg = f'{"" if found else "Not"} Found mac {mac} of iface '\
          f'from output of domiflist'
    if found != expect:
        test.fail(msg)