Safeguarding BGP advertisments

[Lukasz Jarosz]

Hello,
I am currently working on handling edge cases of BGP advertisements malfunctions in my network. I am writing to this mailing list to confirm that I haven’t missed BIRD native solution.
Issue in question is when BGP router loses its connectivity to rest of the internal mesh and still advertise routes to upstreams (I use manual aggregates, because my internal routes have very long prefixes and address space is non continuous).
AFAIK (these were my ideas how to implement safeguards):
- I can’t use BFD to guard advertisement of static blackhole route,
- I can’t use BFD to guard pipe protocol.
As I understand my only solutions are to use external monitoring tooling to disable advertisements to upstreams or restructure BGP configuration in a way that externally advertised prefixes come to BIRD routers through channel that is dependent on connection to internal mesh. 
Have I missed something? 

Best regards,
Lukasz Jarosz

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