DHCPv6 still feared and hated at Apple?, was Re: Mac OSX 10.7from Sabrina

[Bjoern A. Zeeb]

On Aug 20, 2011, at 8:18 PM, Mark Kamichoff wrote:

> On Thu, Aug 18, 2011 at 11:22:31PM +0300, Sabrina Friedman wrote:
>> Sorry to come late to this thread, but I did some testing with a
>> freshly-installed copy of Lion (clean install, not upgrade).  DHCPv6
>> does work as expected as you mention.  I also noticed that
>> privacy/temporary SLAAC addresses are enabled by default.  Anyone else
>> seeing that?
> 
> Indeed, and I can see this causing problems in certain environments,
> such as enterprise networks.  Doing the following:
> 
> % sudo sysctl -w net.inet6.ip6.use_tempaddr=0 
> 
> ... disables it.  Originally this didn't work for me running 10.7.0, but
> it seems to work correctly on 10.7.1.  The temporary addresses are still
> there after I set the sysctl, but they're not used for outgoing
> connections anymore.  I suspect they'll be purged after the lifetimes
> expire.  Although, I'm not sure how to set this on boot, since
> /etc/sysctl.conf doesn't exist on OS X. 

Create it.

-- 
Bjoern A. Zeeb                                 You have to have visions!
         Stop bit received. Insert coin for new address family.