firehol_level_1 has 0.0.0.0/8 etc ?

[feld]

I mean that's one way to stop attacks, but seriously?

0.0.0.0/8
10.0.0.0/8
192.168.0.0/16

Is this intentional?

[solracsf]

See https://www.team-cymru.com/bogon-reference-http