[NANOG] Re: How can the IP spoofing problem be solved within a country?

BCP38 is the solution, but getting networks to actually implement it is a challenge. It can be achieved in a few different ways. When you say it is a problem for multi-homed networks, I think you may be conflating BCP38 with uRPF specifically. BCP38 can be done without using uRPF, and I think it usually is. uRPF may cause issues with multi-homed networks from what I understand. --TimH On Sat, 5 Apr 2025 18:07:57 +0300 T. Fırıncı via NANOG <nanog@lists.nanog.org> wrote:

I thought that bcp38 could be a solution, but some people said that this solution would create a problem in multihome networks.