Rayhaan JaufeerallyandClaude Opus 5.5
efb2d81a50
A route with the BLACKHOLE community (RFC 7999) asks for the traffic to its prefix to be dropped. Exchange route servers pass these on as host routes with the exchange's blackhole address as next hop, and they were rejected as "prefix too specific", which hid what they are. Routes from EBGP neighbors with BLACKHOLE are now rejected as "blackhole request", whatever their length. One short enough to pass would have been taken as an ordinary route, sending the traffic to the blackhole next hop: the request honoured without anyone having chosen to. Acting on blackhole requests is not supported; the import policy page and the standards list say so. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>