On 29/04/2016 02:01, Jiankang Yao wrote:
> Dear all,
>  
>       We submit a draft about "A DNS Query including A Main Question
> with Accompanying Questions".
>  
>        Any comments are welcome.

I am unconvinced that the ability to specify multiple QNAMEs offers any
benefits and can't think of any good use cases where the client knows a
priori what the other QNAMEs might be.   [ I don't consider looking up
example.com and www.example.com at the same time to be 'good' ].

The examples given all appear to show a recursor -> authority query, but
I see no hint in the draft about whether it's only for that path or also
for stub -> recursor.

My own draft in this area (draft-bellis-dnsext-multi-qtypes) where only
a single QNAME is supported and a single RCODE is returned has IMHO far
clearer semantics.  It's also appropriate both for stub -> recursor and
for recursor -> authority.

Ray

p.s. I noticed a dangling reference to RFC1321 (MD5) ?

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