FlowSpec

[Colton Conor <colton.conor () gmail com>]

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.