[Dnsmasq-discuss] Why does the dnsmasq routing feature require a subnet prefix length of 64?

[hamish at moffatt.email]

On 21/6/23 09:49, imnozi at gmail.com wrote:
> I did some math a while back. IPv6 will 'never' run out of addresses? Hah! It'll happen sooner than anyone thinks.
>
>    - Assume 2^31 IPv6 LANs attached to the internet around the world.


And what's stopping more than 2^31 LANs being attached? Why did you 
focus on what's wasted rather than what's unallocated?

It's actually worse than you think, as a lot of service providers are 
issuing /48s to customers, allowing for 2^16 LANs each, while most users 
will only have 1 or 2.


Hamish