Rand didn't ask you to be a smartass, he asked you to explain what additional/different parameters /dns should accept and what on DNS would look like, which is a perfectly valid request. And he never said /dns itself would return something (in the sense that identifiers do), that much should have been obvious to you. You are the one who should do some more reading or rather make sense of what you read.

I bet you didn't like my tone, did you? Well, I'm sure Rand didn't like yours either.