Some ways DNS can break

When I first learned about it, DNS didn’t seem like it should be THAT complicated. Like, there are DNS records, they’re stored on a server, what’s the big deal? But with DNS, reading about how it works in a textbook doesn’t prepare you for the sheer volume of different ways DNS can break your system in practice. It’s not just caching problems! So I asked people on Twitter for example of DNS problems they’ve run into, especially DNS problems that didn’t initially appear to be DNS problems. (the p...