@classmethod
    def existing_dhcp_networks(cls, conf):
        """Return a list of existing networks ids that we have configs for."""
        confs_dir = cls.get_confs_dir(conf)
        try:
            return [
                c for c in os.listdir(confs_dir)
                if uuidutils.is_uuid_like(c)
            ]
        except __HOLE__:
            return []
dataset/ETHPy150Open openstack/neutron/neutron/agent/linux/dhcp.py/Dnsmasq.existing_dhcp_networks