Re: Privacy IPv6 addresses (RFC 4941) and the SNMP IP address table in RFC 4293

[Kristine Adamson <adamson at us.ibm.com>]

Suresh/Brian,
   Thanks for your quick replies.  I
just wanted to verify that the ipAddressOrigin MIB object would still be
set to random(6) for the privacy addresses defined by RFC 4941. 


Kristine Adamson
IBM z/OS Communications Server: TCP/IP Development
Internet e-mail:adamson at us.ibm.com


Brian Haberman <brian at innovationslab.net> wrote
on 06/25/2008 03:10:37 PM:

> Hi Kristine,
> 
> Suresh Krishnan wrote:
> > Hi Kristine,
> > 
> > Kristine Adamson wrote:
> >>
> >> Hello,
> >>    I have a question about the SNMP IP address
table in RFC 4293.  For 
> >> privacy IPv6 addresses (as described in RFC 3041), it appears
that the 
> >> ipAddressOrigin MIB object is supposed to be set to a value
of 
> >> random(6).  Is this true also for these addresses as
defined by RFC 4941
> > 
> > Yes. The ipAddressOrigin will be set to random for addresses
generated 
> > using RFC4941 as well.
> > 
> >> where sites can selectively enable or disable the use of
privacy 
> >> addresses for some prefixes?
> > 
> > I am not sure how this plays a role in picking the ipAddressOrigin
> > value. Maybe I misunderstood the scope of your question.
> 
> The ipAddressOrigin TC supports 4293 the same way it does 3041.  The
> commentary in the RFC was written prior to the elevation of privacy
> addresses to draft standard.
> 
> My understanding of 4293 is that it is not meant as a mechanism to
> control the generation of privacy addresses in any way.  I am
not aware 
> of any *standardized* method for doing this.  Though section
3.6 of 491 
> encourages vendors to provide such a knob.
> 
> Regards,
> Brian
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