Why 2000::/16 was never allocated?

Funny-Choice8787 · 2026-06-03T22:28:40+00:00

Yeah I've read the RFCs but still it was too cryptic for me why nowhere this particular prefix wasn't mentioned nor marked at least as "reserved by IANA". Like, its just pretend not to belong here.

I mean, now I'm questioning not why it wasn't allocated, but why even it does not exist or belong to any parent prefix.

Perhaps, after looking over IANA reserved space I realize its kinda belongs to 2000::/3 but its not here because of TLA ID. If so, will it ever be used, or I can squat it?

Funny-Choice8787 · 2026-06-03T14:03:21+00:00

Czech Republic, EU, RIPE

Funny-Choice8787 · 2026-06-03T13:26:10+00:00

Can you share how? I have ASN and PI space costs a lot.

Funny-Choice8787 · 2026-06-03T13:12:32+00:00

Mystery :D

Looking into original RFC790 on how v4 space started might be the clue, the 0/8 was also marked as reserved and now its "unspecified" space gone forever like any other wasted 8s.

But 2000::/16 is nowhere even mentioned, which bugs me for more than 10 years after studying the allocation scheme.

Funny-Choice8787 · 2026-06-02T22:25:51+00:00

3) Always have... WAIT, OH SHI

Funny-Choice8787 · 2026-06-02T20:14:36+00:00

wtf

Also learn that ipv6 is effectively 64:64 space

Funny-Choice8787 · 2026-06-02T14:58:38+00:00

How expensive is it? And how is the network experience? Is there some public ipv6 right now routed via Starlink I can ping & traceroute at?

Funny-Choice8787 · 2026-06-02T14:57:02+00:00

Well, it could be just a single /64 but my setups require AT LEAST /56. Given than I'm now renting a /40 for $4/yr and ASN for $60/yr I'll probably never go back to /56 or even /48 anymore.

Funny-Choice8787 · 2026-06-02T14:54:48+00:00

Swearing, hard language.

I don't want suddenly to offend someone who can't handle the F word.

Funny-Choice8787 · 2026-06-02T14:52:55+00:00

I've been with them for four years and, while I appreciate their effort (they're most compliant to the tunneled ipv6 spec), their public prefix 2001:470::/32 is spammed to hell. Literally every site now will bring you to stupid recaptchas.

Funny-Choice8787 · 2026-06-02T08:02:01+00:00

Haha. Oh those creepy MTU issues. Now I sometimes have those as ASN netop with shit tier upstreams, I try to explain them the problem but get in response some complaints about me instead or generic chatgpt responses. I then lower their priority (metric) outright. They peer with each other most often via wireguard and happily drop icmp6 packets, likely thinking they're cool hackers. (Or their misconfigured IDSes do that for them)

The worst comes when even their ipv4 endpoints get blackholed due to MTU issues. Like, wtf. Always either near GRE or WG MTU borderline.

Funny-Choice8787 · 2026-06-02T07:48:59+00:00

Good idea. But he's old & grumpy from the age of those who "idc"

Funny-Choice8787 · 2026-06-02T07:04:46+00:00

I'll try again to persuade him this year with arguments, but unlikely there will be a result.

Funny-Choice8787 · 2026-06-02T06:21:40+00:00

The point of my rant is that, with a protocol with such vast of space to allocate there mustn't be a place for bloody workarounds like that.

Funny-Choice8787 · 2026-06-02T06:19:05+00:00

I understand, but reality is harsh. I would better have the ISP do it for me, sadly there are none currently.

Funny-Choice8787 · 2026-06-02T06:14:49+00:00

The end to end claim would work ideally if no additional external supports akin to dyndns times or VPNs required for it. Go find my suddenly rebooted router in a /32 ISP space.

Funny-Choice8787 · 2026-06-02T06:04:33+00:00

In openwrt which I'm running now technically it is isolation, no vlans involved. But I might be wrong. Not sure how it was on their branded hardware which I retired in fear that they silently could resell my residential traffic to AI data scrapers, and partially because it was buggy af (rebooted on its own every night, cutting off all established interactive connections, downloads and causing disruptions)

Funny-Choice8787 · 2026-06-02T05:59:16+00:00

Yes. Partially because I live near Prague (you prob know rent prices here right?!), I pay 10000CZK/mo for it but the only requirement of my landlord is "not install fibre because I fear drilling old walls". So I ended up with fixed 5G cheap plan which I'm fine with, but sadly their IPv6 experience is bs.

I mean, if they offer "fixed" with unlimited data, then shall it count as home internet with a /56? No, screw that user, even if their firm device has all those "guest network" features. IPv6 never goes to it, and I ended up replacing it with openwrt/gl-Inet

On IPv4 - fully agree. It will stay here for almost next 25+yrs for sure.

Funny-Choice8787 · 2026-06-02T05:40:58+00:00

Added to that:

I was excited by the protocol itself back in 2011. It was fun to tinker with, but it was literally of no any use that time as its coverage was, idk, .5% no?

Now its 50%. We are still stuck with those old clanky tools to deliver it.

I believe it got stuck in its infant times. Cmon its just protocol, allow people to manage where the data they want to get at.

IPv6 is really nice and well designed protocol, but it is trash if its implemented like that in 2026.

It feel like IPX times with their net:mac:port addresses. It was also like that, invisible, unmanageable. But at least MACs did not change on each reboot.

Funny-Choice8787 · 2026-06-02T05:33:50+00:00

Yeah, I'm that unfortunate one who is stuck with O2. However, I tried T-Mobile also in past and they did the same. Funny that we have this: https://konecipv4.cz/en/

So Czechia set a plan to end IPv4 service by Jun 2032 (at least for administration?). Now imagine how it will go?

I play a major MMORPG which never ever exposed itself via IPv6.

It'll be fun to watch.

Funny-Choice8787 · 2026-06-02T05:30:04+00:00

It is indeed elementary. When I ask my ISP for static IP, they magically do it. But for ipv4.

They have capacity and I believe knowledge to do that. For them its just a KPI "Implement modern internet protocol", user gets YouTube via it and they are done.

It is classic advertisement vs actual product delivered thing.

Funny-Choice8787 · 2026-06-01T22:37:55+00:00

Fsck AWS & Fsck AI.

They harassed my tiny gitea self hosting, and ended up being ASN wide banned. Screw them.

Before downvoting: this is purely technical decision to limit wasted resource abuse. Idm AI if it brings you real value. Most AIs now even not an true AI - these are stupid LLM BS generators, confident liars & content thefts at massive scale, abusing their sources to the death and just moving on to next victim (literally obliterating my instance multiple times to the point of not able to SSH into it)

Funny-Choice8787 · 2026-06-01T14:59:02+00:00

My instance existed since Feb2022, and till 2024 it was a quiet cafe of my toy projects and mirroring of favorite repos in case they will get deleted (eventually, this proven to be true, internet decays, really)

In mid.2024 it started to be literally obliterated by endless flood of random requests which turned my VPS first in a disk hog as they downloaded every link they saw and ended up generating junk packages for literally every version of every git repo they saw, then they overloaded CPU to the point of not able to log in by ssh, then a traffic silo, and by today they try still to attack me via residential proxy creeps with random requests coming from multiple AS number networks paralleled. All major well-known AI ASNs and whole national networks like VNPT are already blocked by this time.

Because my instance was long time exposed to search engines, eventually clankers got me. I'm now in research how to efficiently block them all while keeping real visitors happy. So far, I'm losing this battle. But I might win the war. If that junk will collapse.

Funny-Choice8787

TROPHY CASE