Ondřej Caletka @Oskar456@mastodon.social
- Personal website
- https://ondřej.caletka.cz
Technical expert at RIPE NCC Learning and Development. Interested in open source software, the Internet and public transportation.
Joined Mar 2019
RT @zajdee@twitter.com
Find a broken #IPv6 routing between @TMobile_CZE@twitter.com and @Cloudflare@twitter.com. :-(
(Already reported to Cloudflare, not sure if they can ask someone at TMCZ to have this fixed in a reasonable timeframe... Reported to TMCZ SMC/NOC too.)
RT @ripencc@twitter.com
Get an overview of the most relevant IPv6 security topics, related to the fundamentals of the IPv6 protocol in this two hour online learning session tomorrow. There are still a few places available. #security #ipv6
Register at:
https://lirportal.ripe.net/training/register/courseCode/IPS20200005
RT @ripencc@twitter.com
#Getcertified for your #IPv6 expertise. Our new exam 'IPv6 Fundamentals - Analyst' is live and can now be scheduled. For more details, go to:
https://www.ripe.net/support/certified-professionals/ipv6-fundamentals-analyst-exam
RT @UKIPv6Council@twitter.com
Google are close to having an IPv6-only guest network deployed - https://www.ietf.org/proceedings/interim-2020-v6ops-01/slides/slides-interim-2020-v6ops-01-sessa-the-day-i-broke-all-the-treadmills-google-ipv6-only-deployment-00 #IPv6
🐦🔗: https://twitter.com/UKIPv6Council/status/1287677609795637248
RT @objetsfabuleux@twitter.com
Penguins getting ready for flying.
#ipv6 #VIIRB #comingsoon
https://viirb.ungleich.ch
🐦🔗: https://twitter.com/objetsfabuleux/status/1275157853444210688
RT @ripencc@twitter.com
To celebrate the eight-year anniversary of World #IPv6 Launch Day, we're sharing a graph of the uptake of IPv6-capable #RIPEAtlas probes in the last five years along with their location in our service region - they mark 42,6% of the currently active probes!
Hey, @madebygoogle@twitter.com, are you aware that #Chromecast does not work on an #IPv6-only network?
No matter whether there is NAT64 or not, the device keeps saying „try restarting your router“ 😠
RT @sjmsteffann@twitter.com
For those needing access to public @github@twitter.com repositories from #IPv6 only machines, you can use http://github-v6.com instead of http://github.com, like https://github-v6.com/netbox-community/netbox.git/.
🐦🔗: https://twitter.com/sjmsteffann/status/1253765873153736705
RT @UKIPv6Council@twitter.com
The next @UKIPv6Council@twitter.com roundtable is being held online at 2pm on 28th April - to register for free visit https://www.eventbrite.co.uk/e/uk-ipv6-council-virtual-roundtable-tickets-102273246032 #IPv6
🐦🔗: https://twitter.com/UKIPv6Council/status/1250008160074678274
RT @toreanderson@twitter.com
I have been testing #IPv6 roaming while Corona-stranded in 🇷🇴, using SIM cards from 🇵🇱 Orange, 🇸🇪 Tele2 and 🇳🇴 Telenor.
The results, in short:
🤷♂️ Digi
✅ Orange
✅ Telekom
❌ Vodafone
For full details, check out my blog post at https://toreanderson.github.io/2020/04/13/ipv6-roaming-in-romania.html
🐦🔗: https://twitter.com/toreanderson/status/1249795214295945218
RT @mahtin@twitter.com
Dear @GCPcloud@twitter.com, I have delayed my database upgrade on your platform for a few years hoping this lack of #IPv6 would be fixed by now. Sadly with only weeks left before a mandatory upgrade, I'm executing a #DOWNGRADE from v6-only to v4-only. Not cool! Yours sincerely, an #IPv6 user
🤨😟😲
RT @ipv6excuses@twitter.com
Because some people manually disable #IPv6, the @ubuntu@twitter.com @nginx@twitter.com package maintainers decided to stop Nginx from listening on [::]:80 by default.
https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1743592
🐦🔗: https://twitter.com/ipv6excuses/status/1230233865618444288
RT @joeklein@twitter.com
Has any one performed a packet loss, jitter and performance on MAP-T and MAP-E vs dual stack, NAT64/DNS64, or 464XLAT? #IPv6
RT @treysis@twitter.com
I made a list of public NAT64 gateways: #IPv6
RT @apnic@twitter.com
You are my valentine; you bring me pleasure.
Your sheer range of addresses; so vast to measure.
Make this day one you’ll treasure,
and deploy #IPv6; a protocol for ever and ever.
https://www.apnic.net/community/ipv6/
RT @apnic@twitter.com
Sure to be discussed during the #IPv6 session at #apricot2020 in Melbourne this month https://2020.apricot.net/program/schedule/#/day/8/apnic-ipv6-deployment https://twitter.com/jeremyvisser/status/1225285089065455616
RT @MiyuruSankalpa@twitter.com
Spotify is trying to deploy #IPv6. they just dual stacked http://www.spotify.com
🐦🔗: https://twitter.com/MiyuruSankalpa/status/1221058260238839808
- Personal website
- https://ondřej.caletka.cz
Technical expert at RIPE NCC Learning and Development. Interested in open source software, the Internet and public transportation.
Joined Mar 2019
Server run by the main developers of the project 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!