![[This image is only accessible over IPv4]](http://image.r4.td.potaroo.net/measure-1.jpg)
![[Image accessible over IPv4 and IPv6]](http://vs.td.potaroo.net/measure-2.jpg)
![[This image is only accessible over IPv6]](http://image.r6.td.potaroo.net/measure-4.jpg)
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The image on the left should load if your browser is capable of using IPv4.
The centre image is loadable using IPv4 or IPv6, and the image will show which of these protocols your browser prefers.
The image on the right is only loadable only your browser is capable of using IPv6.