On Thu, Oct 16, 2025 at 01:59:05PM +0300, Martin Tonusoo via NANOG wrote:
Once I replaced the BIRD with FRR on router "rZ"(bystander; https://gist.github.com/tonusoo/1cced39aa6ae53143d12623a05f02331), then I indeed observed 10+ seconds long propagation delays.
The industry standard concepts of Adj-RIB-Out & MRAI seem extremely relevant to some of the claims made in this *checks notes* paper-that-also-promotes SCION (??!!). The paper's authors could not entirely avoid commenting on MRAI, but in a brief paragraph they stated: """MRAI could theoretically mitigate the BGP Vortex attack by slowing down route oscillations""". In my opinion the lede is being buried a bit here: if it is argued there is a potential problem, then in MRAI there is a potential and deployable solution, that'll work on quite a few platforms! Why not just set MRAI to something very small, like 1 or 2 seconds, on systems that support it, and call it a day? Kind regards, Job