问题：

[多选] A company is using 6to4 tunneling within their IPv6 network. Which two statements about this kindof tunneling are accurate？（）

A . 6to4 is a manual tunnel method
B . Prepending a reserved IPv6 code to the hexadecimal representation of 192.168.0.1 facilitates6to4 tunneling
C . Each 6to4 site receives a /48 prefix in a 6to4 tunnel
D . 2002：：/48 is the address range specifically assigned to 6to4
E . Prepending 0x2002 with the IPv4 address creates an IPv6 address that is used in 6to4tunneling