Hey guys so I'm currently using AC86U with the latest Merlin firmware. So I used to have an ISP which allows me to bridge the modem so that I can do PPPoE directly and do DHCP-PD for IPv6 native. Now, my new ISP doesn't allow bridging. So I'm stuck with a double NAT situation. Now IPv4 is fine like usual but with IPv6 I need to use passthrough mode . Now are there any disadvantages on using passthrough mode? I've searched for ages but it's inconclusive. Does it just disable NAT for IPv6 directly? Does it get processed by Merlin's IPv6 firewall, DoT, SkyNet, etc? Is it safe at all? Because the last thing I want is for me to just rely on the ONT's firewall etc for IPv6 and having the ISP to be able to directly see requests coming out from each of my local devices instead of looking like it coming out from just one device. Which is my router.