On Apr 22, 2010, at 5:55 AM, Jim Burwell wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 4/22/2010 05:34, Simon Perreault wrote: >> On 2010-04-22 07:18, William Herrin wrote: >>> On the other hand, I could swear I've seen a draft where the PC >>> picks up random unused addresses in the lower 64 for each new >>> outbound connection for anonymity purposes. >> >> That's probably RFC 4941. It's available in pretty much all >> operating systems. I don't think there's any IPR issue to be afraid >> of. >> >> Simon > I think this is different. They're talking about using a new IPv6 for > each connection. RFC4941 just changes it over time IIRC. IMHO that's > still pretty good privacy, at least on par with a NATed IPv4 from the > outside perspective, especially if you rotated through temporary IPv6s > fairly frequently.
4941 specified changing over time as one possibility. It does allow for per flow or any other host based determination of when it needs a new address. Owen