[routing-wg] RIS dumps, 0.0.0.0/0 routes and RPKI validator 3

On 3/16/19 11:57 PM, nusenu wrote:
[...]
> 
> Are 0.0.0.0/0 routes filtered by RIPEstat but
> included in RIS dumps?
> Should rpki-validator filter them out?

In the bgp-preview? Probably. Although the route is in RIS, provided
by some peers, 0.0.0.0/0 does more harm than good in tools like RIPEstat
and the rpki-validator's preview.

Alternatively, developers could raise the lower limit of number of RIS
peers which must see a route before it is included in the preview.
Currently, that limit is set to 5.

The 0.0.0.0/0 routes typically have very low visibility. The latest
dump at http://ris.ripe.net/dumps/riswhoisdump.IPv4.gz sees 0/0
announced by 24 different ASes. But where most of them are seen by
just 1, 2 or 3 out of 222 full feed RIS peers, the announcement by 
AS15576 is seen by 5 peers and thus makes it to the preview.

-- Rene