maximum ipv4 bgp prefix length of /24 ?

Thu Oct 5 06:05:40 UTC 2023

On 10/5/23 07:49, Crist Clark wrote:

> But if the assumption is that networks will always eventually totally 
> deaggregate to the maximum, we're screwed. Routing IPv4 /32s would be 
> nothing. The current practice of accepting /48s could swell to about 
> 2^(48 - 3) = 2^45 = 35184372088832.
>
> What will prevent unrestricted growth of the IPv6 table if operators 
> push everything out to /48 "to counter hijacks" or other misguided 
> reasons?

Expecting that the Internet would ever operate at maximum de-aggregation 
is unrealistic. There are too many checkpoints to make that a feasible 
possibility.

It's not an outcome I would spend any brain cycles on, unless as an 
academic exercise.

Mark.