Hi, I had some basic questions about VoIP in a IPv6 architecture, right now I'm running VoIP in a v4 architecture, and I was thinking about to change everything to v6. my questions are not that practical but I would like to understand it well. Question 1: if i had internet full v6 or v4 and that I enable IPsec on my v6 router do I still need a VPN through the internet ? because my routers will anyway exchange their pub/priv key or their certificate to ensure the communication. Question 2: If the answer to question 1 is yes then I only have two advantages to put my VoIP architecture to IPv6 the second advantage for me is the NAT which I will not have anymore. I know that right now I should anyway still use things like NAT-PT, Tunnelling and so one but in full v6 are their any other advantages ? Thank you