>BTW,how to add some salt to make CGA randomized as provacy address? Since
public key has 
>to be kown to receiver.

CGA provides local link security. So the public key is only exposed within
the same network and it is not published on the internet. The privacy is not
important if you are in the same network as other nodes. It is because if
you try to have privacy by your IP, your MAC address can expose your real
identity (if we skip talking about MAC address spoofing).

Regards,
Hosnieh

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