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).

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)

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...

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.

> but they can't cache SERVFAIL.

Correction: according to Cloudflare's blog post, some do cache errors as well.

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...

I suspect it will slowly get there. We'll find out, it is recovering now.

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

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

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

Vodafone is down in Romania too.

DNS servers of a major internet provider in the Czech Republic are down now. Probably not a coincidence (other DNS server's stats show increased traffic so my guess is that Vodafone's DNS servers were unable to cope with the increased traffic and crashed https://twitter.com/BlazejKrajnak/status/1445063232486531099).

It's crazy that half the country doesn't have internet because Facebook stopped working.

If you change your DNS servers, it works! Their DNS servers probably crashed due to FB's DNS not resolving! (https://twitter.com/BlazejKrajnak)

I tried changing DNS server, including 8.8.8.8 and 1.1.1.1, nothing doing.

I looked up Facebook IP address and tried to go there directly, bypassing the DNS. No response.

(I don't care about Facebook much, it was a test. WhatsApp though I have to use to communicate with relatives.)

Thanks for your insightful reply. Could I kindly ask you to elaborate on this point? How did you find families to stay with? Thank you very much!

> Staying with families in different countries and seeing how they lived, how they treated their kids, and their priorities. This was very formative in deciding how to live my life.

Sure. In my case it was friends of family, and family of friends, sometimes a little distant but people were welcoming enough. Those were the best because you could stay a while and they were more relaxed with you, they usually wanted to show you around their town etc.

Also, sometimes I stayed in hostels that were small, family-run, more like a home than a hostel. So you saw the family life there too.

And some families rented out spare rooms. You used to meet people at a train station or other travel hub and size them up (does this happen now?). Sometimes get recommendations from other travellers going in the other direction. Important to note I wouldn't recommend this in general, particularly if you're female or travelling alone. And it requires a good deal of careful judgement and experience. I don't think I'd do this alone.

Maybe Airbnb makes this easier and safer nowadays. I've stayed in a lot of spare rooms in the US via Airbnb and had similar experiences.