IPs

In v6, /48 is the minimum prefix that can be advertised by the routers in the Internet.

I believe in v4, its /24.

Until yesterday I wasn’t aware of that. I might have thought you could even advertise one IP (ie. /128 or /32) but that’s not possible.

Ref: https://blog.apnic.net/2020/06/01/why-is-a-48-the-recommended-minimum-prefix-size-for-routing

• networking