Must seen DDoS attack in the world: https://horizon.netscout.com/?mapPosition=0.00~0.00~1.00
https://www.incapsula.com/blog/questions-ddos-simulation-bgp-attack-vectors-answered.html
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The Ingress router received two route: external and Internal, and it will should the iBGP and drop packect based on the uRPF decision.
BGP FlowSpec:
https://tools.ietf.org/html/rfc7674 ( update of rfc5575 ) Validation Procedure!!!!
The customer attacked Router will send FlowSpec announcement
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