Several examples of the proper usage can be seen in documents by Juniper, Cisco, OpenBSD, and most importantly RFC 3704 which defines the use of RPF with unicast.
正确使用的几个例子可以在许多文档的示例中找到，诸如Juniper、Cisco、 OpenBSD，最重要的是RFC 3704，其定义了单播中RPF的使用。