VPN over IPv6

[Philippe Clérié]

This morning, on my Planet Debian feed, I saw a post from someone using 
OpenVPN on IPv6. I thought it somewhat strange since I believe IPv6 
essentially removes the need for VPN. So what might be a use case for 
VPN over IPv6?

--
Philippe

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The trouble with common sense it that it is so uncommon.
<Anonymous>