[q3k]

> I've been to several isps with cgnat and none of them suffered from congestion.

And I've been on several residential ISPs where IPv4 was unusable during peak netflix hours, likely because people were blindly disabling IPv6 on their devices.

[techsupporter]

I had to disable IPv6 for Netflix because Netflix has decided that the IPv6 address space I get from Hurricane Electric and the IPv6 address space my wireline ISP hands out are both "VPNs" and blocks them.

With AAAA enabled for *.netflix.com address resolution, I can't watch Netflix. If I actually paid for it, versus getting it included as a perk of T-Mobile, I'd have quit over that. I shouldn't have to fiddle with DNS to watch a service I pay for.

[bzb3]

That's not necessarily a problem with nat; anybody with basic networking knowledge can tell you that packets that move through v4 and V6 do not have to follow the same routes. Since there are more users using v4 than V6 it's common for v4 routes to be congested while V6 routes are not.

[q3k]

I know.