[dns-operations] dns retries amplify attack

[Florian Weimer]

On 10/22/2016 01:05 AM, Doug Porter wrote:
> We saw as much as a 35x increase in queries toward Dyn (as33517)
> during the attacks (graph attached).  I'm curious what other parties
> saw.  Do we all need to think harder about preventing a pile on in
> these scenarios?

I think something similar could be observed when .ORG went dark many 
years ago.  Apparently, it was quite hard to bring it back.

Florian