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

[T. Fırıncı via NANOG <nanog () lists nanog org>]

Hello I am Taygun,
I am a 23 year old who has been working in cyber security and information
technologies as a hobby for about 13 years.
There are countless people and institutions that have been victims of IP
spoofing attacks that have increased recently in my country (Turkey).
I started researching to find a solution to this problem and offer a
solution to the ISPs and the IT institutions in my country.
After brainstorming in the TRNOG group in Türkiye and on LinkedIn, such as
NANOG, I thought that bcp38 could be a solution, but some people said that
this solution would create a problem in multihome networks. What is the
exact optimum solution? Where should I look? How can I create a plan that
can be presented to the necessary places?
Currently, all existing or old ISPs and datacenters in Türkiye have
completely lost hope in resolving the problem.

References:
https://www.linkedin.com/posts/taygun-firinci_son-zamanlarda-servis-sa%C4%9Flay%C4%B1c%C4%B1lar-ve-datacenterlar%C4%B1n-activity-7313531773399842816-sOCz
https://spoofer.caida.org/recent_tests.php?as_include=&country_include=tur&no_block=1
Best Practices for Deploying SAV:
https://manrs.org/2023/04/why-is-source-address-validation-still-a-problem/
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