Online tool for testing IPV6 configuration

[Daff_Duck]

I am looking for an online tool that will allow me to play around with IPV6 subnets unfortunatley my company still operate IPV4. If anyone has come across a site that will allow me to set up a mock LAN connection using various subnets and clients I would appreicate it

Thanks

 

[Daff_Duck]

Thanks for the information peeps, however with hindsight I should have been more specific with my requirements. basically I am studying MTA Network course (my company have enrolled me free) in the course work it asks you to configure pcs with IPV6 and various IP ranges and subnets As I cant do this on a company pc I was wondering if (akin to dlinks virtual router were you can change the settings of the router without damaging anything) there is a similar site or link that will enable me to test in a virtual environment?

I hope this clarifies things a little and sorry for any confusion caused