[db-wg] Removal of bogon route objects

Edward Shryane via db-wg wrote on 11/06/2021 08:35:
> In total I found 825 route objects and 57 route6 objects with 
> unregistered prefixes, and which are now eligible for deletion.

Taking both non-merger transfers and unregistered / reserved prefixes 
into account, I figure 1555 ipv4 prefixes and 59 ipv6 route objects:

ipv4:
> https://pastebin.ibn.ie/?b14b8aea397ddf06#4Z7GfmAm1EevbzvkkvzfFAN6hkwubRiaKmbCRfm8AwbY

ipv6:
> https://pastebin.ibn.ie/?fede4d799e615f4f#DiwQK7EGnkCDRyLf5TUUjURReGGTZNyWzbYfu2QQ9wwV

This doesn't include transfers / reregistrations which happened before 
2018-09-04. This would add to the total.

Also, some care needs to be taken with transfers from the lacnic / apnic 
regions because they don't appear to differentiate between 
RESOURCE_TRANSFER and MERGER_ACQUISITION transfer types (or maybe they 
do but they don't have any, which would be odd).  This would take away 
some entries.

The code is available here:

https://github.com/nickhilliard/irrslurp

Seems to run fine on macos and ubuntu.

Nick