How To Specify and Browse Website Using IPv6 Address With Firefox, Opera Web Browser

Q. Now, I know how to configure IPv6 tunnel but how do I browse website using IPv6 IP address like 2001:4860:0:2001::68 under Firefox or Opera web browser?

A. For command line or for browser IPv6 addresses need to be specified by enclosing addresses in square brackets like [2001:4860:0:2001::68].
Fire a webbrowser and type the following url:
http://[2001:4860:0:2001::68]/

(Fig.01: Browsing Website Using IPv6 Address)
I strongly recommend using DNS for resolving all IPv6 host names.