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by CaliforniaKarl 1988 days ago
I agree!

I'm on Comcast in California, and I found that they're providing IPv6 (no CGNAT that I can see) through to my (personally-owned) router (an Asus RT-AC68U). So all my systems at home are getting an IPv6 (or multiple) using the /64 dynamically allocated by my ISP.

And today I just discovered that my parents, who get service from Cincinnati Bell FTTH, are also getting IPv6! They're using an ISP-provided router, and everything is just working.

I am really happy that things are rolling out, albeit slowly.
4 comments
xxpor 1988 days ago
For all of the issues with Comcast, the one bright spot with them is their IPv6 support. They were one of the first to support it well.
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CaliforniaKarl 1988 days ago
Ah, I didn't know that! But it makes sense; their network is certainly large enough.
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BlueTemplar 1988 days ago
Well, duh, there's no NAT in IPv6...

A dynamic /64 is still not proper Internet though.

As a residential customer, that would be a static /56 at least :

https://www.ripe.net/publications/docs/ripe-690

> /64 is not sustainable, it doesn't allow customer subnetting, and it doesn't follow IETF recommendations of “at least” multiple /64s per customer.

(Why are ISPs being skimpy on IPv6 addresses?? Doesn't this imply that they will need to do extra work in the future to move those /64 customers to /56 or /48 ?)

> An alternative is to reserve a /48 for residential customers, but actually assign them just the first /56. If subsequently required, they can then be upgraded to the required prefix size without the need to renumber, or the spare prefixes can be used for new customers if it is not possible to obtain a new allocation from your RIR (which should not happen according to current IPv6 policies).

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bo1024 1988 days ago
Can you get static IPv6 addresses assigned? Or do they change periodically?
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cma 1988 days ago
This might hurt privacy a bit as now each device in the house is uniquely tracked (already possible through other fingerprinting, but with this much moreso).
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the8472 1988 days ago
That's what IPv6 privacy extensions are for. The first RFC specifying that is from 2001 and it has been available in most operating systems for a long time now, although it was buggy for a while in windows.
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