First of all I have no practical experience with IPv6 but as I have to change ISP by the end of this month, I was given by the new ISP the choice of having a fixed /64 IPv6 or to monthly pay for a fixed IPv4 so I am trying to decide. I read this post http://www.linksysinfo.org/index.ph...om-router-works-ping-from-lan-does-not.72347/ that helped me to understand in theory how IPv6 works and the differences in NAT. As @Jacky444 in the aforementioned post, I also use NGINX as a reverse proxy to access from the public internet several clients of my LAN or services running on my server, in fact to make things a little bit more complicated I run a TUN OpenVPN server at port 443 that redirects non OpenVPN packets to NGINX. I also use CloudFlare for a trusted https access whenever needed. A few questions to the IPv6 & Tomato experts. In my specific case I have to run the Tomato router behind another router (a Fritzbox 7360). For the ones who don’t know, the Fritzbox is a xDSL modem, router, DECT base, VoIP and WLAN combo. Its xDSL modem, DECT base and VoIP are good but all the rest is a piece of junk, that is the reason for me to run an AC68U with Tomato in Double NAT. How would IPv6 run in this situation (tomato router behind a router)? Can DHCP be handled by Tomato only or I have to NAT the IPv6? Does the access restrictions of Tomato work with IPv6 as it does with private IPv4?