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On 2020-04-23 18:13, Colton Conor wrote:
> Do any of the large transit providers support FlowSpec to transit
> customers / other carriers, or is that not a thing since they want to
> sell DDoS protection services? FlowSpec sounds much better than RTBH
> (remotely triggered blackhole), but I am not sure if  FlowSpec is
> widely implemented. I see the large router manufacturers support it.


They have extended blackholing, and FlowSpec, sure its all have costs.
I'm using both services from them and quite satisfied.

In general operators don't like flowspec, because it is not easy to 
implement it right,
there is bugs and most important its "eating" TCAM.
For example: