RE: Revision of the SLAAC/renum I-D (Fwd: New Version Notification for draft-gont-6man-slaac-renum-01.txt)

["STARK, BARBARA H" <[e-mail]>]

On the off-chance that people in IETF might want to base recommendations on real research and statistics, here is an excellent paper regarding frequency of IP address changes. 

https://www.caida.org/publications/papers/2016/reasons_dynamic_addresses_change/ 

What we don't (publicly) have are numbers of customers who complain about the impact of IP address changes. But the number of ISPs who are saying this presents a problem for them (i.e., drives up help desk calls, causes customers to switch to other ISPs, etc.) might be an indication ...

Another data point is this:
https://www.vicimediainc.com/often-ip-addresses-change/

The claims they make as to frequency and why ISPs don't change don't seem to have any factual basis, so that's not what I consider relevant. What I consider relevant is they are a (non-ISP, non-ISP-affiliated) advertising company who claims to make money from selling ads based on mapping IP addresses to physical location. They don't claim to get their data from ISPs. 

Personally, I have no interest in enabling companies like this. I'm also not aware of any actual mass market problem related to IP address changes. Mass market products aren't about meeting the needs of 100% of people at any cost. Mass market broadband products are about meeting the needs of the mass market.

While I don't see a mass market problem related to IP address changes, I do support Fernando's goal with this draft. I think making edge networks and hosts more resilient to network changes is helpful. I think it might be good if we had more comments suggesting improvements to Fernando's proposals, rather than pretending we could obviate any need for these proposals by insisting ISPs provide static IP addresses/prefixes and that people be able to take their IP address(es) with them when they move.
Barbara