Hacker News new | ask | show | jobs
by vasqw 1264 days ago
>Some devices coming out now from Google, etc. are IPv6-only and do not support 6rd tunnels at all.

I find this very, very hard to believe. I haven't found anything online. Can you give me some pointers?

>Possible further benefit, reaching India and China who certainly aren't issuing IPv4.

All Indian and Chinese websites have ipv4 addresses in case I wanted to reach them.

I think people should come to terms to the fact that everybody is moving to cgnat and the world is not falling apart as they said it would.
3 comments
TickleSteve 1264 days ago
Most mesh devices (not wifi), i.e. thread/openthread devices that use 6LowPAN are IPv6 only. They're often based on microcontrollers with limited resources, so dont even support TCP, only UDP. Many smart meters also use this same set of technologies (IPv6/6LowPAN/UDP/CoAP/etc) which is my own area of expertise, but the Google (and Amazon) devices also use these.
link
cassianoleal 1264 days ago
> people should come to terms to the fact that everybody is moving to cgnat and the world is not falling apart as they said it would.

As someone who's behind CG-NAT, I agree that the world is not falling apart. It is, however, very inconvenient.

The IPv4 Internet has more fluctuation in latency - I imagine it gets worse in periods when many more connections are having to go through the ISP's CG-NAT router, and/or when a lot more volume of data is going through that same bottleneck. It's not the end of the world, but it's not ideal.

On top of that, my IPv4 traffic is bundled together with a cohort of cusotmers whose Internet behaviours I know nothing and have no control about. This affects my reputation on things like CAPTCHAs and other forms of access control. It's not the end of the world, but it's not ideal.

I can't get into my own network from an IPv4-only external network without resorting to routing contortionism. It's not the end of the world, but it's not ideal.

CG-NAT requires expensive and power-hungry equipment, which in turn means more maintenance, more complex infrastructures, more equipment failure and replacement and increased energy usage.

It's not the end of the world.

But it may well be contributing to it.

link
Sunspark 1264 days ago
> >Some devices coming out now from Google, etc. are IPv6-only and do not support 6rd tunnels at all.

> I find this very, very hard to believe. I haven't found anything online. Can you give me some pointers?

Google Wifi, Mercku M2, etc. have been reported as not having support for 6rd or 6to4.

link