The format line in the previous figure contains the following parts.
Part |
Length |
Definition |
---|---|---|
Prefix |
16 bits |
6to4 prefix 2002 (0x2002). |
IPv4 address |
32 bits |
Unique IPv4 address that is already configured on the 6to4 interface. For the advertisement, you specify the hexadecimal representation of the IPv4 address, rather than the IPv4 dotted–decimal representation. |
Subnet ID |
16 bits |
Subnet ID, which must be a value that is unique for the link at your 6to4 site. |