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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

#61

Post by welterde »

xwolfi wrote: post #48
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.

It just works and IPv6 solves no problems while bringing many more. If address space was a problem, we d have switched when mobile phone started doubling the number of devices: but they can all have the same IP per tower and use NAT ...

Mobile providers are among the largest users of IPv6 for exactly that reason. You might even already use IPv6 on mobile without realizing it..

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

#62

Post by philistine »

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.

It will take something absurdly massive like the iPhone to drop IPv4 to turn the tide. Look at how Apple's aggressive use of the iPhone has changed things. Right now it's their push for eSIM.

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

#64

Post by [deleted] »

mrweasel wrote: post #46
_eht wrote: post #6

Earlier quoted context omitted.

Why does McDonald’s own so much prime real estate? Kind of a misguided question imo.

Because they're a real estate company, disguised as a fast food chain. Ford on the other hand isn't an internet company, but their IPv4 range represent and actual value on their balance sheets. Realistically, Ford may also have use their IP range in a kinda of haphazardly way, simply because they never had a shortage or had to deal with multiple public range. So cleaning up their network, to be able to free any numbe…

[deleted]

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

#65

Post by magicalhippo »

yrro wrote: post #51
PlutoIsAPlanet wrote: post #35

Earlier quoted context omitted.

> 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?

I thought the same with my ISP, but it turned out it was pfSense who didn't do the right thing or something. Switched to OpenWRT and I got a /56 right away.

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

#66

Post by cesarb »

zokier wrote: post #49
WarOnPrivacy wrote: post #4

In considering the rollout of IPv6, end users often get marginalized. This is frustrating to me. When we try to highlight ISPs who refuse to deploy IPv6, mobile services get highlighted - as if homes and businesses could just use them instead of wireline. If that doesn't end the discussion then IPv6 acolytes will go on about transit traffic or anything else until IPv4-only users go away and stop ruining their optimis…

But there is like gazillion tunneling etc options for people whose isp doesn't provide IPv6; I don't think it's fair to accuse the IPv6 community for ignoring people with ISPs that do not provide IPv6 connectivity when there is so much work put into making viable adaptation paths for them. What more could the community do?

> But there is like gazillion tunneling etc options for people whose isp doesn't provide IPv6

Last I looked, a lot of these either require a public IP address (do not work behind CGNAT), are defunct (not accepting new registrations, or even have a parked domain), or no longer work as well as they used to (both 6to4 and Teredo depend on public anycast relays, and their connectivity seem to have gotten worse; and Teredo also requires that the native IPv6 hosts do not filter ICMPv6 Echo Requests and Echo Replies, which unfortunately are too commonly filtered by overzealous sysadmins).

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

#67

Post by ignoramous »

mkj wrote: post #53
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?

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.

Still need CGNAT for Dual Stack - Lite. Or, a NAT for 464Xlat.

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

#68

Post by themoonisachees »

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?

240/4 ("class E") addresses were intended a buffer for future allocation, but they can't use it for global unicast because a lot of equipment considers any IP above 239.255.255.255 to be invalid. There have been RFCs to make it formally global-unicast and local-unicast but none have succeeded because of the above-mentionned poorly programmed equipment.

That said, if you know your equipment can handle it like some network operators know theirs can, there is nothing stopping you from using it as a /4 local address space.

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

#69

Post by themoonisachees »

_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 find these maps make great screensavers or desktop backgrounds. Why not a poster? That said maybe I'll wait a few years before ordering the ipv6 poster, I have black paper at home.

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

#70

Post by Melkman »

nvahalik wrote: post #63

Why does it all start with "2"? e.g. 2000 -> 2f00? Where are the other prefix segments?

Because IANA started delegating prefixes starting with 2. And haven't done enough delegations to go to 3. Prefixes starting with 0 of F are also in use for mapping IPv4 addresses to IPv6, link local and multicast adressing and other special needs.
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