In your previous mail you wrote: While this is simple in traditional LANs I'm worried about the consequences in networks like Bluetooth scatternets where devices in power saving modes will have to be waked up. I also imagine there easily will be partitions in such networks, and that DAD therefore will provide little assurance. Instead address uniqueness could be assured from EUIs. => I have no concern about the last statement. The problem with (too) optimistic DAD is to fail to detect a collision before the damage and when there are duplicated EUIs the damage is already very great. This is why I proposed to use IMEIs for mobile phones which have no IEEE devices so no EUIs but still have a globally unique hardware number. PPP is another case where DAD can be forgotten.
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