> Yes, there are ways to configure IPv6 to isolate subnets, separate local traffic from internet traffic, set up firewalls and DMZs, run local DNS, etc., but th

> Yes, there are ways to configure IPv6 to isolate subnets, separate local traffic from internet traffic, set up firewalls and DMZs, run local DNS, etc., but they're all more complicated to configure and administer than their IPv4 equivalents. Eh, I think that has hindsight bias. Setting up NAT manually, or customizing how things are NATed beyond the typical "one or two subnets/IP ranges behind a NAT gateway and maybe a DMZ" you see in businesses and residences is quite complicated! It's just that our control planes are really optimized to make that common case very easy. From router web UIs to pf presets to Windows'/NetworkManager's "share network" functionality to what articles/how-tos are available, that complexity is very effectively hidden but not removed. As IPv6 becomes more entrenched (and more sites move to IPv6-only or public-IPv6-only deployments), the same thing that happened for the IPv4 world will happen for network segmentation configuration in the IPv6 world: it will get a lot easier and common defaults/conventions will emerge. I don't think the inherent complexity differences between IPv4 and IPv6 are that relevant here.