加载RIP协议，动态更新路由表，模拟计算机网络中路由表的更新过程，采用多线程。程序比较简单，对于了解RIP协议过程还是挺有帮助的-RIP is loaded dynamically update routing tables, simulation of computer networks routing table update process, the use of multi-threading. Procedure is relatively simple, for the unders