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Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

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Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#51

Post by yrro »

PlutoIsAPlanet wrote: post #35
Sunspark wrote: post #29

Earlier quoted context omitted.

Some devices coming out now from Google, etc. are IPv6-only and do not support 6rd tunnels at all. Possible further benefit, reaching India and China who certainly aren't issuing IPv4. Hopefully the day comes when people can get static IPv6 addresses instead of a dynamic one behind an ISP NAT.

> get static IPv6 addresses instead of a dynamic one behind an ISP NAT. Some UK ISPs give out /48s (cough Sky) but with dynamic allocation. So you reboot your router and every single IPv6 device on your network needs to re-address. Makes routing/port forwarding a PITA and nearly impossible using IPv6.

Huh? I'm only able to get a single /64 with Sky. If I enable PD then I get nothing. Perhaps this is the fault of the Unifi Dream Machine's poor IPv6 support... maybe I should take another look?

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#52

Post by mkj »

daneel_w wrote: post #50

Can anyone write a little bit on 240.0.0.0/4 ("Future use"), 48.0.0.0/8 ("Prudential securities", same as Wachovia?) and 25.0.0.0/8, what they are about and why they're seemingly entirely unused?

240 is multicast etc? 25 is UK defence, also used by some companies internally. I'm also curious about 48.

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#53

Post by mkj »

charcircuit wrote: post #26
Sunspark wrote: post #25

Earlier quoted context omitted.

My ISP to this day still doesn't have dual-stack. It makes a 6rd tunnel available to their users as a "beta" (for years). I find it mystifying to be honest. I know for a fact they have a nice modern facility and an expert head sysadmin. They even have a local fiber optic network. It makes no sense to me that they're clinging so tightly to IPv4.

What is the benefit to the ISP in supporting IPv6 to justify the extra cost of the support?

They don't need to buy as expensive cgnat hardware if a greater proportion of traffic is ipv6. That's the rationale given by an up-and-coming ISP in Australia.

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#54

Post by sekh60 »

rossmohax wrote: post #47

IPv6 only is still unusuable :( I bought new Sony TV and allocated it a new VLAN with IPv6 only network just to see how it works TV couldn't even detect that it connected to the internet, despite it receiving ipv6 address from my router. It looks like it couldn't use IPv6 DNS servers. If I try to configure IP address statically it wont let me enter IPv6 address at all.

We have a Sony Bravia from two years ago. Android TV, I forget the model number. It seems to be an Android problem is an ipv6 DNS server is unreachable, or phones and tablets, all Android, continuously attempt to disconnect and reconnect to the network. That said once I got my DNS servers listening on V6 they all seem to work.

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#56

Post by daneel_w »

mkj wrote: post #52
daneel_w wrote: post #50

Can anyone write a little bit on 240.0.0.0/4 ("Future use"), 48.0.0.0/8 ("Prudential securities", same as Wachovia?) and 25.0.0.0/8, what they are about and why they're seemingly entirely unused?

240 is multicast etc? 25 is UK defence, also used by some companies internally. I'm also curious about 48.

"240 is multicast etc?"

That would be 224.0.0.0/4, no?

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#57

Post by dx034 »

Does anyone have a good resource to really get ipv6? I have an intuitive understanding of ipv4 but still struggle to understand ipv6 in a way that would make me feel comfortable switching over. So far, all docs I read made it look vastly more complicated than ipv4.

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#59

Post by photonbeam »

jart wrote: post #33
kstrauser wrote: post #11

Earlier quoted context omitted.

Short answer: because they got there first. Longer answer: it doesn’t really matter in the scheme of things. I saw where someone did the math of recovering all the corporate /8s (assuming that there was a justifiable reason for repossessing address space that they requested and were allocated fair and square). It would extend the IPv4 timeline by like a month and a half. IPv4 is used up, and it’d be exceptionally dif…

Saying IPv4 is used up is like saying America was used up after the homesteading period of free land ended. I predict Ford will end up like how Yahoo used to be an Alibaba holding company.

Why did they stop allocating spare land for free?

Re: Posters of the IPv4 and IPv6 internet as of Jan 1, 2023

#60

Post by TickleSteve »

vasqw wrote: post #42
Sunspark wrote: post #29

Earlier quoted context omitted.

Some devices coming out now from Google, etc. are IPv6-only and do not support 6rd tunnels at all. Possible further benefit, reaching India and China who certainly aren't issuing IPv4. Hopefully the day comes when people can get static IPv6 addresses instead of a dynamic one behind an ISP NAT.

>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 fa…

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.
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