22 Oct
2023
22 Oct
'23
5:44 p.m.
On Sun, 22 Oct 2023 at 19:35, Owen DeLong <owen@delong.com> wrote:
Actually, Job, the 1.2.0/20 would be the longest prefix announced for 1.2.4/24 and 1.2.7/24 in this case. It’s a rather clever end-run. The /20 won’t match the more specific as0 ROAs, so it gets accepted. The /24s either aren’t advertised or they get discarded as invalid.
You wouldn’t create AS 0 ROAs if you want to announce the IP space pull traffic into the discard filters on your edge. Kind regards, Job