,0.0.0.0,127.0.0.1
```

Args:
    max_length: The maximum length of the URL
    allowed_schemes: The allowed URL schemes
    host_required: Whether the URL must have a host
    default_host: The default host to use if the URL does not have a host
    default_port: The default port to use if the URL does not have a port
    default_path: The default path to use if the URL does not have a path
    preserve_empty_path: Whether to preserve an empty path or convert it to '/', default False
    strict: Whether to use strict URL parsing
    ref: optional unique identifier of the schema, used to reference the schema in other places
    metadata: Any other information you want to include with the schema, not used by pydantic-core
    serialization: Custom serialization schema
úmulti-host-urlrö