Re: Middleboxes and EDNS(0)

On Dec 19, 2014, at 5:11 AM, Ted Lemon <[email protected]> wrote:
> 
> On Dec 18, 2014, at 11:29 PM, Kumar Ashutosh <[email protected]> wrote:
>> If DNS gets OPT RR (A) in an incoming packet, it will return back the same OPT RR in the final response back to the sender.
> 
> No, that's not what the text says.   If you read the whole section, it says that if the middlebox isn't being intelligent about what's in the OPT RR, it should forward it without modification.   If it is intelligent, it is assumed to be able to do the right thing, and the interaction between it and the upstream server is a separate transaction from the interaction between it and the downstream client: that is, state must somehow be maintained.  

Huh? The text says no such thing, which is why I asked the question. That is a consistent interpretation, but it is certainly not in the text.

> Of course, I am not exactly an expert on this, so I'm curious whether the assertion I have just made will provoke a stern correction, but I would be surprised if it did.

When you say "the text says" and you don't quote the text, you should not be surprised.

--Paul Hoffman
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