What would your ISP do with the information that there are 73 unique addresses in your network at this point in time? Especially given that devices may mint any number of them for different reasons, so you can’t even really assume that corresponds to the number of physical devices in your network?
So I should cancel one of my pipes because the "commitee" overcomplicated things in the name of autoconfiguration?
> What would your ISP do with the information that there are 73 unique addresses in your network at this point in time?
Sell it of course. Good info for targeting marketing/political propaganda per household.
> I haven’t seen a bog-standard router yet that didn’t just do it out of the box.
Which one, the one from ISP A or the one from ISP B? :)
That is absolutely not what I said. It’s a more complex setup than a single connection with either protocol, and can be solved with both.
> Which one, the one from ISP A or the one from ISP B? :)
Realistically it is going to return an A record with both addresses, maybe also the link-local one, any works locally. That is a non-issue.