Just had a hair-tearing situation (and I already have barely any hair left) where @letsencrypt certbot simply refused to create a key/cert pair on a @debian server. 
Turned out to be a domain with a mix of IPv4 and IPv6 #DNS records. #IPv4 were changed, #IPv6 not. 
https://www.claudiokuenzler.com/blog/1480/lets-encrypt-certbot-error-mixed-dns-records-ipv4-ipv6
@ffhl @videolan die technische Hintergrund der neuen Streams:
Statt #IPv6 / UDP / #RTP / #Opus. Ist es jetzt: IPv6 / UDP / #MPEG2TS / RTP / Opus.
Es ist also noch ein gaaanz toller (Sarkasmus), proprietärer, unnötiger Protokollheader dazwischen gekommen, der nur das Paket aufbläht. VLC v3 kann aber noch nicht das #IETF #RFC standardisierte, native RTP-Opus, das kann erst der nightly/v4.
Sobald VLC endlich mal releasen sollte, schmeiß ich das MPEG-TS auch ganz schnell wieder weg.
@freifunkMUC ansonsten fände ich es auch noch sehr spannend, wenn man als weiteren Service für VPN und die VMs auch #Multicast dann anbieten könnte. Auch per #IPv6 und #PIM / #pim6sd über das #IntercityVPN zwischen Communities dann irgendwann. Das gäbe es meines Wissens nach auch bei keinem kommerziellen Angebot bisher.
Aber dann müssten wir nochmal schauen, wie man das gerade mit euren #GluonParker Bestrebungen noch hinbekommen könnte.
My company has no offices, so we rely on shared workspaces when we meet up. So far not a single one I have been to has had #ipv6 available.
Question to the network people out there:
Are there any ISPs that are IPv6 only (without providing a NAT/whatever)?
Background: Having an argument with a provider that hasn't published any AAAA records, and whilst I think that's poor form, I'm wondering if this would actually negatively affect any actual users in practice?
I’m not against April Fools RFCs, as much as questioning how many new people in ops and infrastructure actually understand networking well enough to get that this is a joke.
2 more #IPv6 updates from #AWS
RAM endpoints are now dualstack. yay, but also meh.
Bigger news is that API gateway is now dualstack. Not sure that it justified a full blog on just turning it on tho 
https://aws.amazon.com/blogs/aws/amazon-api-gateway-now-supports-dual-stack-ipv4-and-ipv6-endpoints/
To optimize performance and ensure smooth transition to IPv6, it is important to understand how its packet header differs from IPv4 in structure and design
Here is an overview comparing IPv4 and IPv6 header formats 
#ipv6 #technology
Find high-res pdf books with all my networking related infographics at https://study-notes.org
This amazing, cursed, fun, terrifying, makes you sick if you've ever worked in #networking and incredibly entertaining all at the same time:
https://1.6.0.0.8.0.0.b.e.d.0.a.2.ip6.arpa/@domi/statuses/01JQHWXY605XVPGY5MAXV30K5X
Der Server für das @c3voc ist mittlerweile am Daten schaufeln für https://media.ccc.de.
Hier könnt ihr euch live die Statistiken ansehen:
https://stats.ffmuc.net/d/aegea5ohylkaoa/ffmuc-media-ccc-de?orgId=1&from=now-24h&to=now&timezone=browser&refresh=30s
Benutzt mehr #IPv6!
Český #T-Mobile by měl od zítřka (1. dubna) začít plošně nasazovat #IPv6 na mobilní síti! Nové SIM ji dostanou hned, starší uživatelé budou muset počkat, až na ně přijde řada. Takže zapněte v nastavení APN podporu dual-stacku a testujte.
T-Mobile je poslední český mobilní operátor, který IPv6 zatím neumí. To se během pár dnů snad změní a budeme plně mobilně IPv6-ready.
Podle Google máme dnes asi 31% penetraci IPv6 u koncových uživatelů. Tohle by s tím mohlo zase pohnout nahoru.
CloudWAN is the fancy, pricey global networking toolset #AWS wants you to use to build your network.
but it didnt support a protocol that has been mainstream for 20+ yrs. now it does
#ipv6
https://aws.amazon.com/about-aws/whats-new/2025/03/aws-network-manager-cloud-wan-privatelink-ipv6
#AWS IAM endpoints now avail over #ipv6
https://aws.amazon.com/about-aws/whats-new/2025/03/aws-identity-access-management-dual-stack-ipv4-ipv6-environments
if your transition to IPv6 is glacially slow, don't worry, AWS is keeping pace with you
@DoctorBrodsky @woe2you @miah given #Quad9 bowed before the #Contentmafia and censored #DNS requests, I'll continue to recommend using #OpenNIC's Servers instead
94.103.153.176 & 2a02:990:219:1:ba:1337:cafe:3 as well as144.76.103.143 & 2a01:4f8:192:43a5::2
I merely retain quad9 on said list for archival purposes. I Yeeted #CloudFlare aka. #ClownFlare since they are a #RogueISP!
Na jarenlang wachten levert 
