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

Kristine Adamson <adamson@us.ibm.com> Thu, 26 June 2008 09:53 UTC

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Subject: Re: Privacy IPv6 addresses (RFC 4941) and the SNMP IP address table in RFC 4293
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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@us.ibm.com


Brian Haberman <brian@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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