On 14 avril 2014 17:57:53 CEST, Tristan PILAT <tristan.pi...@gmail.com> wrote:
>match from any community 64514:888 set nexthop blackhole
>

Hi,

Make sure you dont accept from any but eg from group customers, make sure the 
address *does* belong to your customers space (to avoid a customer installing a 
blackhole route on a route you advertise).
Make sure you do strip 64514:888 from other peers.
...

>And what about the client side ? Which command should he enter if he
>wishes
>to blackhole ip 1.2.3.4 eg
>
>Is it something like that ? bgpctl network add 1.2.3.4/32 community
>64514:888

Exactly.

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