mrouted 是支持tunnel的DVMRP多播路由协议的实现，此版本为2011-10-23的最新版 -mrouted is an implementation of the DVMRP multicast routing protocol. It turns a UNIX workstation into a DVMRP multicast router with tunnel support, in order to cross non-multicast-aware r

文件传输协议（FTP）的正式标准，进行FTP编程时的参考资料-File Transfer Protocol (FTP) of the formal standard for FTP programming reference