IPv6 Address Compress and Expand

1. IPv4 Map : Select the format in which IPv4 addresses are embedded in IPv6 addresses. A typical IPv6 embedded IPv4 address has the following three methods:
   1. ::X.X.X.X Format : The first 96 bits are represented in hexadecimal separated by colons, all of which are 0. The last 32 bits represent the corresponding IPv4 address in dotted decimal. For example ::192.168.5.72 .
   2. ::FFFF:X.X.X.X Format : The first 96 bits are represented in hexadecimal separated by colons, where the first 80 bits is 0, the middle 16 bits are FFFF, and the last 32 bits represent the corresponding IPv4 address in dotted decimal. For example ::FFFF:192.168.5.72 .
   3. 64:FF9B::X.X.X.X Format : The first 96 bits are represented in hexadecimal separated by colons, with a value of 64:FF9B::/96. The last 32 bits represent the corresponding IPv4 address in dotted decimal. For example 64:FF9B::192.168.5.72 .
2. Compress : Compress leading 0 and consecutive 0 in IPv6 addresses.
3. Expand : Expand the leading 0 and consecutive 0 in the IPv6 address.
4. Open and Download : Text files that are supported for opening are encoded in UTF-8. The downloaded file encoding format is UTF-8.