There are several methods of obtaining IPv6 connectivity, including global 6in4 tunnels or tunnel brokers like Hurricane Electric or SixXs that give you a whole subnet to play with. But if you just want it for your home/office PC because your ISP doesn't provide it, here's a quick way that also works for those behind routers, ie., ADSL modem, 3G Mifi/Wifi dongles:
Windows users
Sign up for a free account at gogo6.com, and obtain the
gogoCLIENT.
Ubuntu and Debian
Code:
sudo apt-get install gogoc
sudo gogoc
The configuration file is in
/etc/gogoc/gogoc.conf if you wish to use it as an authenticated user.
General Linux users
As Windows users, but download and compile the Linux source code. I do believe there's a Fedora package floating around.
After running gogoc/gogoCLIENT, you should have a
tun with an IPv6 address assigned from the 2001:5c0:1000:a::/64 pool (anonymous) or 2001:5c0:1000:b::/64 (authenticated - requires account).
Then head on over to
http://test-ipv6.com/
P.S.: There is a spam control question, asking you what the most popular Internet Protocol is. The answer is: IPv4