Posters of the IPv4 and IPv6 internet as of Jan 1, 2023 • Hacker News Board

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

#31

Post by iforgotpassword » Sun, Jan 01, 2023, 8:53 AM UTC

kstrauser wrote: post #11

herpderperator wrote: post #3

Why does Ford still have an entire /8 (and even worse, completely unused)?

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…

It'll probably get bought by Amazon after like five minutes. ;-)

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

#32

Post by toast0 » Sun, Jan 01, 2023, 9:31 AM UTC

gorgoiler wrote: post #21

The ghostly amount of v6 space is so exciting to see. One day we’ll need to physically route a whole block to another planet — there’s no point using BGP when the ping from Earth to Mercury is 230,000ms at best. I love IPv6 and it’s so exciting to see it used widely at last. My mobile device is v6 although it’s still dual stack. Home networks are doomed to by v4 forever so your 1990s eToaster can display Yahoo! News!…

> Why does Tesla announce 6x /48s instead of having a /32 of their own and handling their routing internally?

Probably the same reason they annouce /24s and not aggregated prefixes on v4 when they're contiguous. We can't tell from the he bgp tools, and I'm not going to look at other tools, but I'm guessing those /48s are distinct sites and are advertised differently (or maybe one is used as anycast, the others being distinct sites). Theoretically disconnected sites could each have their own AS, but it's very common for an organization to use a single AS globally, and only advertise locally served addresses at each site/BGP session.

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

#33

Post by jart » Sun, Jan 01, 2023, 9:35 AM UTC

kstrauser wrote: post #11

herpderperator wrote: post #3

Why does Ford still have an entire /8 (and even worse, completely unused)?

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.

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

#34

Post by toast0 » Sun, Jan 01, 2023, 9:36 AM UTC

Sunspark wrote: post #29

charcircuit wrote: post #26

Earlier quoted context omitted.

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

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.

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

This is important for servers, but not so much for consumers, IMHO. Sites in India and China are highly likely to be dual stacked, so v4 only users aren't likely to be missing any content at least currently. Although certainly missing access to v6 preferred peers. There's very few really v6only use cases out there yet, almost every consumer access network has some way to get to v4, there's too much v4 only content not to; even if the v4 access is much worse than v6, as it sometimes is.

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

#35

Post by PlutoIsAPlanet » Sun, Jan 01, 2023, 10:42 AM UTC

Sunspark wrote: post #29

charcircuit wrote: post #26

Earlier quoted context omitted.

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

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.

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

#36

Post by irdc » Sun, Jan 01, 2023, 10:49 AM UTC

wielebny wrote: post #22

Is 3ffe::/16 (6bone) still active on the Internet?

It’s been shutdown since 2006: https://datatracker.ietf.org/doc/html/rfc3701

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

#37

Post by midasuni » Sun, Jan 01, 2023, 10:53 AM UTC

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.

Even if it was static changing the ISP will result in a new public range, meaning an internal re number, unless you use NAT, in which case you may as well use ipv4 and nat.

If you have two ISPs (say a backup 5G) then you have to renumber every time the main goes down. If you want to load balance you’re screwed, unless of course you use nat.

Residential ISPs won’t allow you to bgp peer your own /48

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

#38

Post by justsomehnguy » Sun, Jan 01, 2023, 10:53 AM UTC

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?

You don't need NAT, especially CGNAT.

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

#39

Post by joe-collins » Sun, Jan 01, 2023, 10:55 AM UTC

_eht wrote: post #2

Serious question: why would I want to purchase this as a poster? Asking as a nerd, but maybe not a very specific data oriented nerd.

I could see it being a neat illustration in a high school classroom.

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

#40

Post by midasuni » Sun, Jan 01, 2023, 10:56 AM UTC

usr1106 wrote: post #24

There is quite a block of multicast addresses in IPv4. Is it used for anything in real life?

Use it all the time. If you watched the fireworks on TV in the U.K. last night that was sent via multicast from the river for example.

Closed circuit IPTV systems use it constantly. I’ve got about 500 addresses ok my network encoding different video and audio channels for desktop use.

That said I only use addresses in the 239/8 and 224/8.