What is the origin of the private network address 192.168.*.*?

A company used it in some early documentation, people literally copied the same while setting up their networks, and that eventually became the standard.

https://lists.ding.net/othersite/isoc-internet-history/2009/oct/msg00000.html

[ih] What is the origin of the private network address 192.168.*.*?

@nixCraft I wonder if the date 1921-06-08 meant something to someone
@nixCraft I always thought it was some binary pattern that made sense as mask?
(but never verified it)

Weiß wer in #Wien , wo dieser Unfall passiert ist?

https://wien.orf.at/stories/3320836/

In Gedanken bin ich beim Opfer (weiblich, 45 Jahre).

Der Gewalttäter (männlich, 25 Jahre) ist auf freiem Fuß. Wann wird eigentlich U-Haft verhängt? Reicht dafür keine schwere Körperverletzung und Fluchtgefahr?

Döbling: Radfahrerin nach Unfall in Lebensgefahr

Bei einer Kollision mit einem Klein-Lkw in Döbling ist eine 45-jährige Radfahrerin am Sonntag lebensgefährlich verletzt worden. Der Lkw-Fahrer geriet auf die Gegenfahrbahn und prallte gegen die Radfahrerin. Sie befindet sich mit einem Polytrauma in einem Spital.

ORF.at
@benchmark Kurier schreibt Krottenbachstraße 🤷
Verhängung und Dauer der Untersuchungshaft

@dasgrueneblatt Ich habe schon öfter von U-Haft mit der Begründung der Begehungsgefahr gelesen, also die Gefahr von neuerlichen Straftaten würde bestehen. In diesem Fall würde es jedenfalls zutreffen.

Ich habe das Gefühl, die Staatsanwaltschaft geht bei der Beantragung der U-Haft sehr selektiv vor!

Ich nehme dem Unfallverursacher (männlich) den Sekundenschlaf im Ortsgebiet in der Krottenbachstraße nicht ab. Ich vermute eher das Handy als Ablenkung.

Die Staatsanwaltschaft müsste diesem Verdacht nachgehen, bevor die Spuren verwischt sind. Warum werden "Unfälle mit Personenschaden" so milde verfolgt?

#Wien

@benchmark Normalerweise sollte das Handy ausgewertet werden. Das dauert aber noch, bis wir davon hören.

@benchmark

Und das rumfummeln mit Smartphones ist so schön nachzuweisen ! Also ... los !

@nixCraft I moved my local network to 10.0.0.0/24 for aesthetic reasons. Turns out, you can just do that, noone's stopping you.

@zrb @nixCraft why would anyone try to stop you from using one of the private IP address spaces?

If you like you could also use public IP addresses. No one would stop you but you would most likely run into difficulties. Like wrong reverse IP translation or not reaching some services anymore.

@nixCraft for as far as I remember the RFC1918 private networks are clearly by definition, but 192.0.2.0/24 started out as a documentation example and got away

Counter claim by Daniel Karrenberg (a co-author of RFC1918) :

"10/8: the ARPANET had just been turned off. One of us suggested it and Jon considered this a good re-use of this "historical" address block. We also suspected that "net 10" might have been hard coded in some places, so re-using it for private address space rather than in inter-AS routing might have the slight advantage of keeping such silliness local.

172.16/12: the lowest unallocated /12 in class B space.

192.168/16: the lowest unallocated /16 in class C block 192/8.

In summary: IANA allocated this space just as it would have for any other purpose. As the IANA, Jon was very consistent unless there was a really good reason to be creative."

https://web.archive.org/web/20190308152212/https://mailman.nanog.org/pipermail/nanog/2017-October/092636.html

@nixCraft

RFC 1918 network range choices

@nixCraft @gothpanda
there's a reason for 192 but yeah not sure why 168 was selected specifically.

Edit: https://mastodon.au/@BenAveling/115170400993412616

Ben Aveling (@[email protected])

Counter claim by Daniel Karrenberg (a co-author of RFC1918) : "10/8: the ARPANET had just been turned off. One of us suggested it and Jon considered this a good re-use of this "historical" address block. We also suspected that "net 10" might have been hard coded in some places, so re-using it for private address space rather than in inter-AS routing might have the slight advantage of keeping such silliness local. 172.16/12: the lowest unallocated /12 in class B space. 192.168/16: the lowest unallocated /16 in class C block 192/8. In summary: IANA allocated this space just as it would have for any other purpose. As the IANA, Jon was very consistent unless there was a really good reason to be creative." https://web.archive.org/web/20190308152212/https://mailman.nanog.org/pipermail/nanog/2017-October/092636.html @[email protected]

Mastodon Australia
@nixCraft Class C CIDR nonsense, but still much easier to understand than the eldritch abomination that is IPv6
@nixCraft A former employer literally did this with their product in the late 1990s, using the 192.9.200.0/24 network, since that was what Sun used in their docs. Eventually caused a big issue when a customer plugged the system directly into their main network
@nixCraft Apparently Sun Microsystems had in their docs. But why did they pick it?