A fault should be generated when the forwarding process fails or the reverse path information cannot be provided.

当转发过程失败或者无法提供反向路径信息时，应该生成错误。

youdao

A fault should be generated when the forwarding process fails or the reverse path information cannot be provided.

当转发过程失败或者无法提供反向路径信息时，应该生成错误。

youdao