[kbirkeland]

That dip is probably not related to the 768k limit. The limit doesnt remove all the current routes, it just doesnt allow for new ones to be installed in hardware. All the routing logic is done in software, so the routes will probably be propagated correctly but not forwarded correctly. See potaroo[0] for other route graphs that don't have the same dip.

The article somehow manages to avoid discerning between control plane and forwarding plane which is a key concept for this issue.

[0]: https://bgp.potaroo.net