On 3/Jan/19 22:08, Andy Davidson wrote:

> There are no stupid questions!  It is a good idea to not BGP announce and perhaps also to drop traffic toward peering LAN prefixes at customer-borders, this was already well discussed in the thread.  But there wasn’t a discussion on how we got to this point. Until the Cloudflare 2013 BGP speaker attack, that sought to flood Cloudflare’s transfer networks and exchange connectivity (and with it saturating IXP inter-switch links and IXP participant ports), it was common for IXP IPv4/6 peering LANs to be internet reachable and BGP transited.

That's interesting to learn.

Running a few exchange points in Africa since 2002, the news was that
the exchange point LAN should not be visible anywhere on the Internet.
It would be interesting to know that this wasn't the case in other parts
of the world.