Your IP address is: 38.103.63.17.
Other ways to tell if you are
using IPv6
RADVD - Linux router advertisement daemon, maintained by Pekka Savola.
pTRTd - Portable Transport Relay Translator Daemon, used to provide access to IPv4 hosts from an IPv6-only network, maintained by Nathan Lutchansky
Linux ISATAP HOWTO - documentation on setting up Linux systems to use the ISATAP tunneling mechanism, maintained by Nathan Lutchansky
Samba IPv6 - patches, RPMS, and directions for compiling and configuring an IPv6-enabled Samba package, maintained by Nathan Lutchansky
IPv6 Web Bug - a web bug that webmasters of IPv4-only websites can place on their pages to determine which of their visitors have IPv6 capability, maintained by Nathan Lutchansky
Users of Litech services may want to visit the Litech Root Certificate Authority page.
If you know of any other general-interest sites available over IPv6, please let me know.