4 ms·

It seems it has caused DNS servers crash for one of biggest Czechia's internet provider - Vodafone. Can be unrelated but I doubt it (https://twitter.com/BlazejK

It seems it has caused DNS servers crash for one of biggest Czechia's internet provider - Vodafone. Can be unrelated but I doubt it (https://twitter.com/BlazejKrajnak/status/1445063232486531099 https://twitter.com/BlazejKrajnak/status/1445063232486531099). Think of it - half the country doesn't have internet because of this crash, that's terrifying. (Switching DNS servers obviously works but that's not something the general population will do)

blntechie 5y ago
All most people have to do now is install an app and it takes care. But messaging need to go from media and news.
megous 5y ago
If only the news reporting was not as stupid as "internet is not working at UPC", instead of DNS resolvers at UPC crashed, here's what you can do... Anyway, I didn't even notice since I run knot-resolver at home. I wonder what it will be like connecting Facebook back to the internet, thundering herd and everything...
- yourad_io 5y ago
  I suspect that the DNS aspect will be fine. The middle DNS servers only need one valid response to cache it for $TTL, but they can't cache SERVFAIL.
  - megous 5y ago
    I mean connecting your company to the internet when you have billions of devices waiting in the line to fetch updates, or whatever. Will not that be an issue? Re-enabling routing to such a massive internet service...
    - yourad_io 5y ago
      I suspect it will slowly get there. We'll find out, it is recovering now.
  - yourad_io 5y ago
    > but they can't cache SERVFAIL. Correction: according to Cloudflare's blog post, some do cache errors as well.
alexdumitru 5y ago
Vodafone is down in Romania too.
agilob 5y ago
Same in the UK, I've just experienced external DNS outage on BT!
TobTobXX 5y ago
Quite likely. Cloudflare has a report that outlines the reason behind it: https://blog.cloudflare.com/october-2021-facebook-outage/ https://blog.cloudflare.com/october-2021-facebook-outage/

blntechie 5y ago

All most people have to do now is install an app and it takes care. But messaging need to go from media and news.

megous 5y ago

If only the news reporting was not as stupid as "internet is not working at UPC", instead of DNS resolvers at UPC crashed, here's what you can do... Anyway, I didn't even notice since I run knot-resolver at home. I wonder what it will be like connecting Facebook back to the internet, thundering herd and everything...

yourad_io 5y ago
I suspect that the DNS aspect will be fine. The middle DNS servers only need one valid response to cache it for $TTL, but they can't cache SERVFAIL.
- megous 5y ago
  I mean connecting your company to the internet when you have billions of devices waiting in the line to fetch updates, or whatever. Will not that be an issue? Re-enabling routing to such a massive internet service...
  - yourad_io 5y ago
    I suspect it will slowly get there. We'll find out, it is recovering now.
- yourad_io 5y ago
  > but they can't cache SERVFAIL. Correction: according to Cloudflare's blog post, some do cache errors as well.

alexdumitru 5y ago

Vodafone is down in Romania too.

agilob 5y ago

Same in the UK, I've just experienced external DNS outage on BT!

TobTobXX 5y ago

Quite likely. Cloudflare has a report that outlines the reason behind it: https://blog.cloudflare.com/october-2021-facebook-outage/ https://blog.cloudflare.com/october-2021-facebook-outage/