8 Nov
2022
8 Nov
'22
3:53 p.m.
On Tue, Nov 8, 2022 at 12:29 PM Mike Hammett <nanog@ics-il.net> wrote:
"Reverse path filtering literally says don't accept a packet from somewhere that isn't currently the next hop for that packet's source address."
FIB or RIB?
I knew of uRPF as available over an interface, per the routing table, not best path available. Or is that implementation dependent?
FIB. The RIB is never consulted on a per-packet basis. It's not built to be fast enough to consult on a per-packet basis. Regards, Bill Herrin -- For hire. https://bill.herrin.us/resume/