#ipv4only

Kevin Karhan :verified:kkarhan@infosec.space
2026-02-28

@PhoebeEule @marquito solang' ich nicht #DualStack auf allen Anbindungen mit Statischen Addressen bekomme ist bei mir das LAN #IPv4only!

hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2026-02-26

Wenn das stimmt, dann wäre AIS der erste ISP, der #ipv6only ist.
Etwas komisch an der Sache:
Deren Website ist immernoch #ipv4only . D. h. wenn der Zugang #ipv6only ist, dann wäre es nicht möglich, von einem AIS-Faser-Anschluss die AIS-Website zu erreichen, was ich mir etwas komisch vorstelle.

Magst du mal von AIS aus testen, ob du die Website erreichen kannst?

ais.th/en/consumers/fibre

@utzer #ais #fiber #ipv6only #ipv4only #thailand

Kevin Karhan :verified:kkarhan@infosec.space
2026-01-10

@goetz nope.

Gibt leider immernoch extrem viel #IPv4only weil in #EDGEland die @BNetzA kein #IPv6 vorschreibt und Hersteller von Hardware & Software sowie Dienstleister sich verweigern zumindest #DualStack umzusetzen.

Kevin Karhan :verified:kkarhan@infosec.space
2026-01-10

@mook @0xIO32

like obviously ipv4 is a pain, but it's also not that big a deal either it's a legacy thing

There are still devices & software being manufactured & sold that are #IPv4only and will refuse to work if they don't have a static #IPv4 on #WAN.

#IPv6 is sadly not yet mandated otherwise #CGNAT & bs like #DualStackLite would've never been created.

hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2026-01-08

Du tust mir leid. #IPv4only

@sci_photos

Kevin Karhan :verified:kkarhan@infosec.space
2026-01-05

@sodiboo I rather want #NAT46 aka. #IPv6+#IPv4 on #WAN and #IPv4only #LAN, because I don't have a provider-independent #IP-Address Space and my #ISP can't be assed to comply with §73 Section 3 Sentence 3 Telecommunications Act so proper Static-IPv6 configuration doesn't work!

Needless to say the way most vendors implement it is fucking cursed!

If I was @BNetzA I'd mandate every Internet connection to be either #DualStack or at least have a /104 of static IPv6's with every #CGNAT'd device (whilst prosecuting every CGNAT using #RFC1918 address space as computer sabotage for bricking #VPN|s)…

  • Alas, they don't…
2025-12-27

@bert_hubert
Thank you for sharing the stats.

Unfortunately your fediverse account lives on an #IPv4only instance.

Kevin Karhan :verified:kkarhan@infosec.space
2025-12-09

@exponentialverteilt @clf name a competent #ISP that just works on that regard.

Plus I can't do #IPv6only because I still need access to #IPv4only resources.

  • And right now all I want is #DualStack wthout exposing LAN hosts!
Kevin Karhan :verified:kkarhan@infosec.space
2025-12-09

Does anyone know how to setup #NAT46 on #pfSense within a #LAN?

The Problem is that I want to provide #IPv6-connectivity on #WAN without having to deal with IPv6 in #LAN.

  • Right now I'm ponderig using fc:: /7 on #LAN with #DHCPv6 but the problem is that #Vodafone's shitbox connection is flaky af and the only #Fallback that I currently have is their shitty #LTE which is #IPv4only woth #CGNAT in #RFC1918 ( 10.0.0.0 /8) and no IPv6 connectivity, thus everytime shit flip-flops connectivity is completely gone on IPv6 and only #IPv4 is on that backup link.

So since I don't have a Provider-Independent IP space and my #ISP is so fucking incompetent that I hereby beg @BNetzA to finally seize their network and nationalize/socialize it I am basically stuck on IPv4 connectivity.

  • The only workarounds I know would necessitate using a #HurricaneElectric #GIF-Tunnel for IPv6 on fallback, which won't work because OFC Vodafone doesn't offer me a static IPv4 or even stazic IPv6-Subnet on their mobile network and I got #DualStack on #WAN on the primary network.

  • The problem re: routing exists for all #MultiWAN setups and I won't pay for #Vipritnet or setup my own #ASN and blow money on a @ripencc membership just to get PI Address Space and having to setup my own Gateway to VPN into through all my WAN & #WWAN connections.

Also the false premise of many sites to prefer IPv6 over IPv4 causes everything to break apart at the slightest disruption.

  • IPv6 really annoys me because unlike IPv4, it just doesn't work and everytime I have to deal with it it's a pain in the ass...
hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2025-12-05

Öhm, Verständnisfrage:

Was passiert, wenn man das neue Outlook in einer Konstellation einsetzt, wo Server und Client inkompatible IP-Versionen nutzen? D. h. Server mit IPv4-only, Client mit IPv6-only, oder umgekehrt.

Tut Microsoft dann dazwischen vermitteln?

Wenn ja, dann gäbe es dafür tatsächlich einen Anwendungsfall.

Moralisch besser wird das Verhalten von M$ dadurch aber nicht.

@leobm #ipv4only #ipv6only

2025-11-18

At #denog17, the people behind #Netzbremse unveiled a new feature: a #speedtest using five different transit providers to (hopefully) uncover unfair peering practices of ISPs, in this case the #DeutscheTelekom #Telekom, but this is very likely helpful for other situations as well. I wanted to dig deeper and found that it uses five different IPv4 prefixes of #Cloudflare that are advertised to different transit providers. Using #HurricaneElectric’s BGP view we get:

I’m not deep enough into the BGP game to understand what transit provider is really pushed for in each prefix.

(unfortunately #IPv4only, I guess they didn’t want to dedicate five /48 prefixes as well for this project).

Link to the speedtest: https://netzbremse.de/speed/

Kevin Karhan :verified:kkarhan@infosec.space
2025-09-25

@aumetra good question.

I have #IPv4only connectivity, so I boosted this...

Kevin Karhan :verified:kkarhan@infosec.space
2025-09-18

@pepper0 @librecast sadly I have #IPv4only connectivity because my #ISP sucks!

hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2025-09-07

IPv4-only website monitoring is useless. How is this supposed to detect an outage that only hits IPv6, such as routing issues???

#Fail #IPv4only #ipv6 @rayrob

Edith: I meant “outage that only hits IPv6”, not “outage that only hits IPv4”

hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2025-08-28

Ok, Github is now finally dead for me due to:

1. #ipv4only
2. Artificial Impertinence

@Daojoan

hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2025-08-19

Also ich lese über das Mobilfunknetz von Vodafone regelmäßig meine Emails. Der Mailserver ist #ipv6only. Hast du denn den APN auf Dualstack eingestellt? Nota Bene hierbei: Wenn man den APN auf #ipv6only einstellt, springt Vodafone auf #ipv4only und du bekommst einen unbrauchbaren Zugang (#ipv4only).

@mrblubber

Kevin Karhan :verified:kkarhan@infosec.space
2025-07-22

@pmevzek @landley I wish I had this luxury.

  • Cuz I often have to deal with fucked-up networks that are #IPv4only and sometimes going #DualStack is flatout not being allowed and even having #IPv6 at the public-facing side is seen as a problem.

And I'm more often than not not the guy who gets to make that decision.

  • I was only able to get IPv6 allowed WAN-side at one place after my employer encountered the problem that some workers have shitty #CGNAT that bricks #OpenVPN so they could not #VPN to the HQ.
hallunke23 🇺🇦:nona:hallunke23@troet.cafe
2025-07-14

Right, but they take question by #IPv4 only because they're on one of those strange #ipv4only instances. WTF?

@WhiteHotaru @General_Effort #ipv4 #ipv6

Kevin Karhan :verified:kkarhan@infosec.space
2025-07-14

@miyuru @palfrey @dwm by #ISP doesn't assign me even a single /128 #IPv6 even if I ask them nicely.

Kevin Karhan :verified:kkarhan@infosec.space
2025-07-13

@miyuru nope. I have #IPv4only #WAN!

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