此程序可用于判定不同的ip地址是否是在同一个子网中，为了以后的延展性考虑，程序不仅接受IPv4地址，也接受将来可能用到的IPv6地址。-This program can be used to determine whether a different ip address on the same subnet, in order to take into account the future scalability, the program not only to accept IPv4 add