Assuming that you have already configured IPv6 address in the system and you confirmed that you can ping the server with its IPv6 address, you just need to edit /etc/pound.cfg and replace every occurence of "Address 0.0.0.0" with "Address ::".
After saving the file, execute "service pound restart" to restart this HTTP reverse proxy software.
To try to accessing the web platform write in your browser
https://[<your server IPv6 address>]/