De-Bogonising New Address Blocks

Filtering bogon routes is a good idea, but not after IANA allocated one of those so-far bogon routes to RIRs.

Filtering of unallocated address space (a.k.a. bogon filtering) is becoming more prolific. This is a good thing. However when those filters are not kept up-to-date they can quickly become too much of a good thing. Recently users of first allocations out of new blocks have experienced problems and aired them on lists like NANOG and in the press. Also, prominent resources like some root name servers were not reachable from a recently assigned address block because of out-of-date bogon packet filters.

RIPE NCC's proposal on De-Bogonising New Address Blocks.