benjojo.co.uk

benjojo posted 23 Jul 2026 17:18 +0000

RFC2544 (Benchmarking Addresses) lays out

The network addresses 192.18.0.0 through 198.19.255.255 are have been
assigned to the BMWG by the IANA for this purpose.

Except, this was a typo, the actual address space was 198.18.0.0 through 198.19.255.255

It seems that at the moment Oracle owns 192.18.0.0/15 , and they are not announcing it, I suspect because there are a non zero amount of things that have accidentality put that in filters

JuliaRez@chaos.socia.. replied 23 Jul 2026 17:46 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

@benjojo

That's a very long game in IP range speculation.

benjojo replied 23 Jul 2026 17:52 +0000
in reply to: https://chaos.social/users/JuliaRez/statuses/116970537881941086

@JuliaRez If presented with enough effort you can unfuck almost any IP space, for example cloudflare spent some huge amount of blood/sweat/tears getting 1.1.1.1 and 1.0.0.0/24 to work

clonejo@social.troll.. replied 23 Jul 2026 17:57 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/mx7F295521xB2DTK2t

@benjojo @JuliaRez Around 2012-2013, in Germany Vodafone/1&1 was using 1.2.3.4 on mobile for their transparent picture reencoding proxy

luckily that kind of MITM stopped with TLS

edit: fixed IP after @nblr's correction

nblr@chaos.social replied 23 Jul 2026 18:02 +0000
in reply to: https://social.troll.academy/users/clonejo/statuses/116970582350837871

@clonejo @benjojo @JuliaRez 1.2.3.4 was the suggested default config for Bytemobile Unison „Optimization Services Node“ and already in use 2010 by all three german carriers at that time. They got bought by Shitriy 2012 - quite fitting.

jomo@mstdn.io replied 23 Jul 2026 18:08 +0000
in reply to: https://social.troll.academy/users/clonejo/statuses/116970582350837871

@clonejo @benjojo @JuliaRez reminds me of this https://pete.ex-parrot.com/upside-down-ternet.html

bortzmeyer@mastodon... replied 24 Jul 2026 07:26 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

@benjojo https://errata.rfc-editor.org/eid423/

benjojo replied 24 Jul 2026 09:01 +0000
in reply to: https://mastodon.gougere.fr/users/bortzmeyer/statuses/116973765020532182

@bortzmeyer yes I linked it in the original post

benjojo replied 23 Jul 2026 17:22 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

A quick gander on github code search does confirm that even today, there are people who are accidentality filtering on Oracle rather than RFC2544 space

erincandescent@akko... replied 23 Jul 2026 18:14 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/HKbpccCP8L73tvVHtR

@benjojo Urbit jumpscare

benjojo replied 23 Jul 2026 18:17 +0000
in reply to: https://akko.erincandescent.net/objects/ac02b7da-8bbe-4ffa-8c09-0bb9ef972cf1

@erincandescent yeah I did chuckle when I saw that of all things come up

wolf480pl@mstdn.io replied 23 Jul 2026 17:45 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/HKbpccCP8L73tvVHtR

@benjojo is this a 1.2M USD typo?

job@bsd.network replied 23 Jul 2026 17:20 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

@benjojo OOPS

faraiwe@mstdn.social replied 23 Jul 2026 17:45 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

@benjojo ::keys microphone:: whiskey-oscar-whiskey, over

992jo@chaos.social replied 23 Jul 2026 20:32 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/24V9dz39d29BwLCbJH

@benjojo I found that error ~10 years ago when I used it for some internal management stuff for systems that moved between several events, because I was pretty sure that nobody would use that address space.
I found the typo once someone pointed out to me, that some database thinks the addresses belong to Oracle. I am lucky that my stuff did not need to connect to oracle...