Six Stages of Debugging
1. That can’t happen.
2. That doesn’t happen on my machine.
3. That shouldn’t happen.
4. Why does that happen?
5. Oh, I see.
6. How did that ever work?
1. That can’t happen.
2. That doesn’t happen on my machine.
3. That shouldn’t happen.
4. Why does that happen?
5. Oh, I see.
6. How did that ever work?
It's not DNS.
There's no way it's DNS.
It was DNS.
https://www.cyberciti.biz/humour/a-haiku-about-dns/