Yaiy... looks like I might have found another bug which isn't in #pim6sd, but in the #Linux kernel instead... It seems like for a veth pair the recvmsg() call returns an #IPv6 sockaddr with a scope-id from the wrong side of a veth pair for #MLD v2 reports. Which pim6sd does not like, it will ignore the join then. MLDv1 reports work as expected though, there the scope id looks correct.

#multicast

So I tried to document a potential pitfall with layer 3 #multicast routing, with #PIM in particular, here: https://wiki.dn42.dev/howto/pim-multicast-vs-unicast-issue
The issue of multicast potentially being black holed if the unicast topology is larger than the potential multicast one. I'm wondering how other people tackle or avoid this or if I'm missing an easy solution.
(I'm wondering if maybe @troglobit or @dentangle might have some ideas?)

#pimsd #pim6sd

Now streaming: Leo Neu live @Nook2025. Via #Multicast + #Mesh. Ambient + electronic music.

@nook @videolan

https://luebeck.freifunk.net/blog/2025-11-11-Freifunk-auf-der-NooK-2025-mit-Multicast/

@auposte
je suggèrerais de croiser / poursuivre / etc avec ça :
https://olivierauber.medium.com/avec-les-intelligences-artificielles-ce-nest-pas-le-travail-qui-dispara%C3%AEt-c-est-la-monnaie-1ffcbf80de13 d'@OlivierAuber

#AI #Internet #Multicast #monnaie

Avec les Intelligences Artificielles, ce n’est pas le travail qui disparaît, c’est la monnaie !
https://olivierauber.medium.com/avec-les-intelligences-artificielles-ce-nest-pas-le-travail-qui-dispara%C3%AEt-c-est-la-monnaie-1ffcbf80de13
#AGI #AI #SuperIntelligence #Multicast #RTM #MonnaieLibre

AI Isn't Killing Work. It's Killing Money.
https://open.substack.com/pub/olivierauber481076/p/ai-isnt-killing-work-its-killing?r=ccrip&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true
#AGI #AI #SuperIntelligence #Multicast #RTM #MonnaieLibre

Neuer Blogpost: "#Freifunk auf der @nook 2025, mit #Multicast feat. #LeoNeu"
https://luebeck.freifunk.net/blog/2025-11-11-Freifunk-auf-der-NooK-2025-mit-Multicast/

Am kommenden Freitag gibt es ab 22:00 Uhr live gemixte Ambient- und Electronic Musik von Leo Neu auf der @nook - und exklusiv auch bei uns im @ffhl per #Multicast Stream.
Wenn ihr also einen #Freifunk Router in Lübeck habt, könnt ihr die Musik z.B. über den @videolan Player dann mithören, der Stream sollte dann bei euch dort auftauchen.

Wenn ihr noch einen Freifunk Router dafür brauchen solltet oder sonstige Unterstützung dafür braucht, fragt uns gerne hier oder in unserem Matrix Chat.

Thought... A network backup system where there are two ipv6 multicast channels. One, servers send on and clients receive on, and one clients send on and servers receive on... Basically servers send "backup everything since T starting now" and then clients who receive that start sending their incremental backups, which all the servers collect and archive.
#ipv6 #multicast #backup

Anyone know why #UPnP appears to be broken on #NixOS?

So far I only found one forum post attributing it to a "beyond repair" broken Multicast in #NixOS

#Multicast

Just noticed that the Wikipedia article regarding "#IPv6 address" says "::/0 -> Default *unicast*" here: https://en.wikipedia.org/wiki/IPv6_address#Default_address_selection
Has anyone any source/RFC why it'd be unicast only? Mathmatically it'd be both #unicast and #multicast, wouldn't it?

That was actually a question I asked on the #IETF PIM mailing list in the past: https://mailarchive.ietf.org/arch/msg/pim/ULFLgUK2tBTGkFu6lv9jjknaMsk/
Without getting a definitive answer.

After two weeks of off-and-on banging my head against this multicast routing lab, I finally found the problem. The default TTL for •all• multicast packets on Linux is… 1. Of course, I overlooked all of the simple stuff in my troubleshooting, as one does. #NetEng #Multicast #Troubleshooting #LessonLearned #ThereAreDays #Sigh

@OlivierAuber hum - AGI is a mirage we should not seek to catch.
human intelligence in a society helped with communication tech is, But indeed it's captured now for decades.
#Multicast is not profiting authoritarianism in any way, so I would really not bet huawei is going to invest in it either. It needs multipolar worlds entities collaborating together, not competing for power. This could come if ppl awake from the current slopness (as a next history wave)

imho it was not a effective stage

Ma discussion "au coin du feu" avec Ben Goertzel au #BGIsummit Istanbul
I reclaim the original DISTRIBUTED architecture of the internet
"CISCO, why not opening #Multicast for #SingularityNet #agi
Et j'ai ajouté en off : "If CISCO don't, Huawei will"
https://www.youtube.com/live/gb5ESFppdD8?si=iHr6wGPYHmwdX4cB&t=11704

So if you can do ethernet over LoRa I suspect that means we could do #multicast as well.

Which would be cool. Worth a look at.

https://social.treehouse.systems/@meph/115365077448221139

I haven’t played extensively with multicast routing for a little over a decade, but here I am grinding the rust off of the metal. Gotta stay fresh if I want to engage in silly proof-of-concept labs. #NetEng #Multicast #Labbing #WorthIt

Würde irgendwann nochmal gerne einen kleinen Vortrag + Workshop zu #IPv6 #multicast routing zwischen #Freifunk communities und hackspaces (via #PIM und #dn42 und Freifunk IntercityVPN) machen, jetzt wo das in der Gluon Firmware und in @batadv soweit laufen sollte. Frage mich aber, was dafür der beste Rahmen wäre. Bei der @nook im November? Oder in kleiner Runde beim kommenden Chaos Communication Congress im Dezember? Oder online vor einem Gluon Meetup? Gäbe es überhaupt Interessierte?

I just wanted to make a little #multicast safety feature in the Linux bridge available to #switchdev + #DSA, too, to use it on #rtl83xx / #rtl93xx #Realtek drivers / switches later. One suggestion on the PR was like, maybe we could do the locking differently or use atomics. Me several hours later:

@vibechen eigentlich schon. Früher hatten wir uns immer viel bei den @ffhl treffen dazu ausgetauscht, aber da kommt leider schon lange niemand mehr, auch nicht durch's ändern auf quartalsweise. Den Austausch vermisse ich etwas.
War auch am überlegen, vll. mal einen #dn42 Vortrag mit anschließendem Workshop beim #Nobreakspace zu machen. Weil man mit dn42 ja auch eine Menge praxisnah lernen+experimentieren kann. Hatte da letztens dn42 wieder eingerichtet und wollte da mit #multicast weiter machen.

@Natanox @librecast @EU_Commission @dentangle on the other hand I think it would be great if public broadcasting institutes in the EU were deciding to move to #IPv6 #multicast in the long run, not DVB-T. Maybe even mixed with public, open IPv6 capable #MeshNetworks (similar to #Freifunk for instance). And tackling any technical issues along the way.
So that eventually we'd have a robust, decentral, bidirectional communication infrastructure at affordable costs. 2/2