Re:New UUID Formats – IETF Draft
by lazide on Friday August 06, 2021 @02:09PM
(#28090891)
I’m pretty sure you mean ‘stable’ not predictable here re:MACs?
The issue with using Mac addresses is it essentially leaked tracking information on the machine being used to generate the uuid - you could associate every ID it ever generated back to that same machine, correlate it to things like open WiFi AP logs, whatever. Which is pretty scary sometimes.
Many OS’s now randomly generate a new MAC on every disconnect/connect for this reason, to at least give some privacy.
The issue with using Mac addresses is it essentially leaked tracking information on the machine being used to generate the uuid - you could associate every ID it ever generated back to that same machine, correlate it to things like open WiFi AP logs, whatever. Which is pretty scary sometimes.
Many OS’s now randomly generate a new MAC on every disconnect/connect for this reason, to at least give some privacy.