题型:名词解释 在IPv6中下列哪些地址是有效的6to4地址()。A.2002:c0a8:6401:2::2B.2002:c0a8:3201:2::2C.2001:c0a8:6401:2::2D.2001:c0a8:3201:2::2 查看答案