ULA prefix lifetime

[Götz Görisch]

Michael,

> :-(
> {Your ISP should avoid that kind of thing; IPv6 being plentiful there is no
> reason not to just statically allocate them all into the (radius) database,
> and just renumber people when there are major re-balancing.}
Michael,

I agree with you, but due to old habits, no regulation and an old
recommendation from Germany Privacy authorities, the ISP does that.
Some are also marketing this as a feature.
We still have ISPs which disconnect PPPoE sessions after 24h, with a
new set of addresses, prefixes after the reconnect.

There is now RFC 9096 which gives recommendations on how to handle
such situations.
https://datatracker.ietf.org/doc/html/rfc9096

Haven't compared the patch with this RFC though myself, due to time constraints.

- Goetz