Temporary IPv4 to access IPv6

This feature will allow you to use IPv4 to access IPv6 on certain ports

IPv4 CLIENT --> THIS GATEWAY IPV4 --> YOUR IPv6 SERVER

Example:
Port is 2021, IPv4 is 103.253.24.40 and IPv6 port is 22
103.253.24.40:2021 to [xxxx:xxxx:xxxx:xxxx:xxxx]:22
this means user can login to SSH via IPv4 103.253.24.40 on port 2021

in other words, "IPv4 to IPv6" feature allow anyone to forward traffic from specific port on IPv4 to selected destination port on IPv6

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