Re: [DNSOP] opportunistic refresh and Happy Eyeballs

["Ralf Weber" <[e-mail]>]

Moin!

On 16 Aug 2017, at 2:44, Warren Kumari wrote:
>> If it's a commonly-used name, I suspect the more straightforward
>> "prefetching" should suffice in practice:
>> https://datatracker.ietf.org/doc/draft-wkumari-dnsop-hammer/
>> Several popular recursive servers already implement the feature.
>> Some of them even enable it by default.
>>
>
> One of the main outstanding items on the "Stop! Hammer Time!" document
> that we need to clean up the implementation section (Appendix A), but
> it does note that at least Unbound (NLNet Labs), OpenDNS, and ISC BIND
> 9.10 implement this.
>From how I read the document and understand the implementations none of
those implements the actual draft, but instead they have implementations
that do some sort of prefetching. If that is the case you can add Nominum
Cacheserve to the list, but I really think we should do some more general
document describing prefetching as a concept and not just one way how to
do it with a hammer ;-).

So long
-Ralf