Add the possibility to announce a supernet with a different community.
I am looking a good way to handle RTBH withing IX. Some IX, like DE-CIX have blackhole stuff so adding a /32 (IPv4) is not an issue. The real issue is the RS on some IX.
Example: we have a aggregate like for example 100.64.0.0/10.
We have to blackhole the 100.64.10.1/32 with community XYZ:666, in this case Erco also announce the 100.64.0.0/10 with community XYZ:690 to avoid announcing the whole subnet on some RS of a selected IX.
Issue is a bit complex: 1- we have to remember all the /32 announced and keep a trace about that 2- when we remove a /32 we cannot remove the related aggregate without check that every /32 announced it NOT on the aggregate (case where your have several aggregate on our subnet).
Also I have no right idea on how we can start ... :p