def build_network(self, interfaces, requested_network):
        for interface in interfaces:
            try:
                network_label = self._extract_network_label(interface)
            except __HOLE__:
                continue

            if network_label == requested_network:
                ips = list(self._extract_ipv4_addresses(interface))
                ipv6 = self._extract_ipv6_address(interface)
                if ipv6 is not None:
                    ips.append(ipv6)
                return {network_label: ips}
        return None
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/api/openstack/views/addresses.py/ViewBuilderV11.build_network