What is your basis for this opinion? Network operators are already talking about it.
> Too late. IPv4 are set to hit 1024K (2^20) in January 2024 at current trends
Allow me to expand that number for you: 1,048,576
One million. A reasonable upper bound for max announced v4 prefixes is somewhere around two million. You can handle that in a few GB of RAM. IPv6 could see 100x or 1000x that number based on how we are handling allocations, at which point prefix trimming will happen.
Unlikely.
> No ISP wants a hundred million+ routes in their routing table […]
Too late. IPv4 are set to hit 1024K (2^20) in January 2024 at current trends:
* https://blog.apnic.net/2021/03/03/what-will-happen-when-the-...
Already close to 10^6:
> I see 904560 IPv4 prefixes. This is 30 fewer prefixes than 6 hours ago and 416 more than a week ago. 59.10% of prefixes are /24.
* https://twitter.com/bgp4_table
* https://bgp.potaroo.net
* https://www.cidr-report.org/as2.0/
Also: https://twitter.com/bgp6_table