Re: [ipwave] MAC Address minor textual issue

[Russ Housley <[e-mail]>]

>> I do not agree with the statement that "there are strong privacy concerns". I suggest changing "concerns" to "requirements".
>> 
>> I think stating that there are strong concerns conveys a sense of this being a big unsolved problem. For the DSRC/ITS-G5 community this is not the case. Privacy protection, including careful avoidance of PII in messages, pseudonymous certificates, and frequent identifier randomization, has been designed into DSRC/ITS-G5 from day 1.  
> 
> Well, I for one am still mystified by how the solution maps to IP.  DSRC can do all of this work, but if my IP addressing doesn’t change in synchrony, it seems like it all doesn’t help. And if the IP addresses do change in synchrony, you abort upper layer TCP connections.
> 
> So I’m still concerned.

I agree that the IPv6 address needs to change whenever the MAC address changes.  This is not a problem for UDP traffic, but it can be a problem for TCP.  In my view, there is no privacy benefit to changing the MAC/IPv6 address while the vehicle is stationary, like in a garage overnight.  In fact, this is the time when long-lived TCP connections are extremely likely for actives like software update.  Is this a place we can add value with crisp recommendations?

Russ