Howto for BGP black holing/null routing

[David Hubbard <dhubbard () dino hostasaurus com>]

I was wondering if anyone has a howto floating around on the
step by step setup of having an internal bgp peer for sending
quick updates to border routers to null route sources of
undesirable traffic?  I've seen it discussed on nanog from
time to time, typically suggesting using Zebra, but could
not search up a link on a step by step.

Thanks,

David