def _get_base_binding_dict(self):
        binding = {
            portbindings.VIF_TYPE: portbindings.VIF_TYPE_VROUTER,
            portbindings.VIF_DETAILS: {
                # TODO(praneetb): Replace with new VIF security details
                portbindings.CAP_PORT_FILTER:
                'security-group' in self.supported_extension_aliases
            }
        }
        return binding