Re: [DNSOP] Cache utilization review and suggestion for EDNS client-subnet

[Mukund Sivaraman <[e-mail]>]

Hi Yuri

On Thu, Feb 04, 2016 at 12:57:52PM +0100, Yuri Schaeffer wrote:
> Hi Mukund,
> 
> > The draft doesn't state that the answer is for the SOURCE
> > PREFIX-LENGTH when SCOPE > SOURCE. At all other times, the answer
> > is meant to be cached at the SCOPE PREFIX-LENGTH.
> 
> I indeed use SCOPE to determine where the answer would fit in the tree
> in my cache. But that doesn't mean I discard SOURCE. I still need
> SOURCE to determine if this cache entry is applicable to the next
> query. There's no contradiction here.

I don't follow. Are you saying you are saving the SOURCE PREFIX-LENGTH
from the original query (responsible for the cache entry) alongside the
cache entry? If so, I don't follow why this is required. Can you
explain?

Or do you mean the use of SOURCE PREFIX-LENGTH from a subsequent query
when looking into the cache?

		Mukund