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Subject: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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All,

here attached the -02 version of RFC 3484 revision work.
I'm very sorry about the long suspension on this item,
despite your commitment on it.

If you can comment on it, I think I can incorporate it
before the cut-off.

Kindest regards,


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Network Working Group                                       A. Matsumoto
Internet-Draft                                                   J. Kato
Intended status: Standards Track                             T. Fujisaki
Expires: August 25, 2011                                             NTT
                                                       February 21, 2011


         Update to RFC 3484 Default Address Selection for IPv6
                 draft-ietf-6man-rfc3484-revise-02.txt

Abstract

   RFC 3484 describes algorithms for source address selection and for
   destination address selection.  The algorithms specify default
   behavior for all Internet Protocol version 6 (IPv6) implementations.
   This document specifies a set of updates that modify the algorithms
   and fix the known defects.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 25, 2011.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   the Trust Legal Provisions and are provided without warranty as



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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Specification  . . . . . . . . . . . . . . . . . . . . . . . .  3
     2.1.  Changes related to the default policy table  . . . . . . .  3
       2.1.1.  ULA in the policy table  . . . . . . . . . . . . . . .  4
       2.1.2.  Teredo in the policy table . . . . . . . . . . . . . .  4
       2.1.3.  Deprecated addresses in the policy table . . . . . . .  4
       2.1.4.  Renewed default policy table . . . . . . . . . . . . .  4
     2.2.  The longest matching rule  . . . . . . . . . . . . . . . .  5
     2.3.  Utilize next-hop for source address selection  . . . . . .  5
     2.4.  Private IPv4 address scope . . . . . . . . . . . . . . . .  6
     2.5.  Deprecation of site-local unicast address  . . . . . . . .  6
   3.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  7
   5.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     5.1.  Normative References . . . . . . . . . . . . . . . . . . .  7
     5.2.  Informative References . . . . . . . . . . . . . . . . . .  8
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . .  8
   Appendix B.  Discussion  . . . . . . . . . . . . . . . . . . . . .  8
     B.1.  Centrally assigned ULA . . . . . . . . . . . . . . . . . .  8
     B.2.  6to4, Teredo, and IPv4 prioritization  . . . . . . . . . .  9
     B.3.  Deprecated address . . . . . . . . . . . . . . . . . . . .  9
     B.4.  The longest match rule . . . . . . . . . . . . . . . . . .  9
   Appendix C.  Revision History  . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11










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1.  Introduction

   The IPv6 addressing architecture [RFC4291] allows multiple unicast
   addresses to be assigned to interfaces.  Because of this IPv6
   implementations need to handle multiple possible source and
   destination addresses when initiating communication.  RFC 3484
   [RFC3484] specifies the default algorithms, common across all
   implementations, for selecting source and destination addresses so
   that it is easier to predict the address selection behavior.

   After RFC 3484 was specified, some issues have been identified with
   the algorithm specified there.  The issues are related to the longest
   match algorithm used in Rule 9 of Destination address selection
   breaking DNS round-robin techniques, and prioritization of poor IPv6
   connectivity using transition mechanisms over native IPv4
   connectivity.

   There have also been some significant changes to the IPv6 addressing
   architecture that require changes in the RFC 3484 policy table.  Such
   changes include the deprecation of site-local unicast addresses
   [RFC3879] and the IPv4-compatible IPv6 addresses, the introduction of
   Unique Local Addresses [RFC4193] etc.

   This document specifies a set of updates that modify the algorithms
   and fix the known defects.


2.  Specification

2.1.  Changes related to the default policy table

   The default policy table is defined in RFC 3484 Section 2.1 as
   follows:

         Prefix        Precedence Label
         ::1/128               50     0
         ::/0                  40     1
         2002::/16             30     2
         ::/96                 20     3
         ::ffff:0:0/96         10     4

   The changes that should be included into the default policy table are
   those rules that are universally useful and do no harm in every
   reasonable network envionment.  The changes we should consider for
   the default policy table are listed in this sub-section.

   The policy table is defined to be configurable.  The changes that are
   useful not universally but locally can be put into the policy table



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   manually or by using the auto-configuration mechanism proposed as a
   DHCP option [I-D.ietf-6man-addr-select-opt].

2.1.1.  ULA in the policy table

   RFC 5220 [RFC5220] Section 2.1.4, 2.2.2, and 2.2.3 describes address
   selection problems related to ULA.  [RFC4193] These problems can be
   solved by either changing the scope of ULA to site-local, or by
   adding an entry for default policy table entry that has its own label
   for ULA.

   ULA has been specified with a global scope because the reachability
   of the ULA was intended to be restricted by the routing system.
   Since the ULAs will not be exposed outside of its reachability
   domain, if an ULA is available as a candidate destination address, it
   can be expected to be reachable.  In fact, such ULA to ULA
   communication is often desired and needs to be prioritized.

   Therefore, the scope of ULA should be kept global, and prioritization
   of ULA to ULA communication should be implemented in policy table, by
   assigning its own label for ULA fc00::/7.

2.1.2.  Teredo in the policy table

   Teredo [RFC4380] is defined and has been assigned 2001::/32.  This
   address block should be assigned its own label in the policy table.
   Teredo's priority should be less or equal to 6to4, considering its
   characteristic of transitional tunnel mechanism.  About Windows, this
   is already in the implementation.

2.1.3.  Deprecated addresses in the policy table

   IPv4-compatible IPv6 address is deprecated.  [RFC4291] IPv6 site-
   local unicast address is deprecated.  [RFC3879] Moreover, 6bone
   testing address was [RFC3701] The issue is how we treat these
   outdated addresses.

2.1.4.  Renewed default policy table

   After applying these updates, the default policy table will be:











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         Prefix        Precedence Label
         ::1/128               60     0
         fc00::/7              50     1
         ::/0                  40     2
         ::ffff:0:0/96         30     3
         2002::/16             20     4
         2001::/32             10     5
         ::/96                  1    10
         fec0::/10              1    11
         3ffe::/16              1    12

2.2.  The longest matching rule

   This issue is related to the longest matching rule, which was found
   by Dave Thaler.  It is malfunction of DNS round robin technique.  It
   is common for both IPv4 and IPv6.

   When a destination address DA, DB, and the source address of DA
   Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
   round robin load-balancing cannot function.  By considering prefix
   lengths that are longer than the subnet prefix, this rule establishes
   preference between addresses that have no substantive differences
   between them.  The rule functions as an arbitrary tie-breaker between
   the hosts in a round robin, causing a given host to always prefer a
   given member of the round robin.

   By limiting the calculation of common prefixes to a maximum length
   equal to the length of the subnet prefix of the source address, rule
   9 can continue to favor hosts that are nearby in the network
   hierarchy without arbitrarily sorting addresses within a given
   network.  This modification could be written as follows:

   Rule 9: Use longest matching prefix.

   When DA and DB belong to the same address family (both are IPv6 or
   both are IPv4): If CommonPrefixLen(DA & Netmask(Source(DA)),
   Source(DA)) > CommonPrefixLen(DB & Netmask(Source(DB)), Source(DB)),
   then prefer DA.  Similarly, if CommonPrefixLen(DA &
   Netmask(Source(DA)), Source(DA)) < CommonPrefixLen(DB &
   Netmask(Source(DB)), Source(DB)), then prefer DB.

2.3.  Utilize next-hop for source address selection

   The RFC 3484 source address selection rule 5 defines the address that
   is attached to the outgoing interface should be preferred as the
   source address.  This rule is reasonable considering the prevalence
   of Ingress Filtering described in BCP 38.  [RFC2827] This is because
   an upstream network provider usually assumes it receives those



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   packets from their customer that have the delegated addresses as the
   source addresses.

   This rule, however, is not effective in such a environment described
   in RFC 5220 Section 2.1.1, where a host has multiple upstream routers
   on the same link and has addresses delegated from each upstream
   routers on single interface.

   So, a new rule 5.1 that utilizes next-hop information for source
   address selection is inserted just after the rule 5.

   Rule 5.1: Use an address assigned by the selected next-hop.

   If SA is assigned by the selected next-hop that will be used to send
   to D and SB is assigned by a different next-hop, then prefer SA.
   Similarly, if SB is assigned by the next-hop that will be used to
   send to D and SA is assigned by a different next-hop, then prefer SB.

2.4.  Private IPv4 address scope

   When a packet goes through a NAT, its source or destination address
   can get replaced with another address with a different scope.  It
   follows that the result of the source address selection algorithm may
   be different when the original address is replaced with the NATed
   address.

   The algorithm currently specified in RFC 3484 is based on the
   assumption that a source address with a small scope cannot reach a
   destination address with a larger scope.  This assumption does not
   hold if private IPv4 addresses and a NAT are used to reach public
   IPv4 addresses.

   Due to this assumption, in the presence of both NATed private IPv4
   address and transitional addresses (like 6to4 and Teredo), the host
   will choose the transitional IPv6 address to access dual-stack peers
   [I-D.denis-v6ops-nat-addrsel].  Choosing transitional IPv6
   connectivity over native IPv4 connectivity is not considered to be a
   very wise result.

   This issue can be fixed by changing the address scope of private IPv4
   addresses to global.  Such change has already been implemented in
   some OSes.

2.5.  Deprecation of site-local unicast address

   RFC 3484 contains a few "site-local unicast" and "fec0::"
   description.  It's better to remove examples related to site-local
   unicast address, or change examples to use ULA.  Possible points to



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   be re-written are below.
      - 2nd paragraph in RFC 3484 Section 3.1 describes scope comparison
      mechanism.
      - RFC 3484 Section 10 contains examples for site-local address.


3.  Security Considerations

   No security risk is found that degrades RFC 3484.


4.  IANA Considerations

   Address type number for the policy table may have to be assigned by
   IANA.


5.  References

5.1.  Normative References

   [RFC1794]  Brisco, T., "DNS Support for Load Balancing", RFC 1794,
              April 1995.

   [RFC1918]  Rekhter, Y., Moskowitz, R., Karrenberg, D., Groot, G., and
              E. Lear, "Address Allocation for Private Internets",
              BCP 5, RFC 1918, February 1996.

   [RFC3484]  Draves, R., "Default Address Selection for Internet
              Protocol version 6 (IPv6)", RFC 3484, February 2003.

   [RFC3701]  Fink, R. and R. Hinden, "6bone (IPv6 Testing Address
              Allocation) Phaseout", RFC 3701, March 2004.

   [RFC3879]  Huitema, C. and B. Carpenter, "Deprecating Site Local
              Addresses", RFC 3879, September 2004.

   [RFC4193]  Hinden, R. and B. Haberman, "Unique Local IPv6 Unicast
              Addresses", RFC 4193, October 2005.

   [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
              Architecture", RFC 4291, February 2006.

   [RFC4380]  Huitema, C., "Teredo: Tunneling IPv6 over UDP through
              Network Address Translations (NATs)", RFC 4380,
              February 2006.

   [RFC5220]  Matsumoto, A., Fujisaki, T., Hiromi, R., and K. Kanayama,



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              "Problem Statement for Default Address Selection in Multi-
              Prefix Environments: Operational Issues of RFC 3484
              Default Rules", RFC 5220, July 2008.

5.2.  Informative References

   [I-D.chown-addr-select-considerations]
              Chown, T., "Considerations for IPv6 Address Selection
              Policy Changes", draft-chown-addr-select-considerations-03
              (work in progress), July 2009.

   [I-D.denis-v6ops-nat-addrsel]
              Denis-Courmont, R., "Problems with IPv6 source address
              selection and IPv4 NATs", draft-denis-v6ops-nat-addrsel-00
              (work in progress), February 2009.

   [I-D.ietf-6man-addr-select-opt]
              Matsumoto, A., Fujisaki, T., and J. Kato, "Distributing
              Address Selection Policy using DHCPv6",
              draft-ietf-6man-addr-select-opt-00 (work in progress),
              December 2010.

   [I-D.ietf-ipv6-ula-central]
              Hinden, R., "Centrally Assigned Unique Local IPv6 Unicast
              Addresses", draft-ietf-ipv6-ula-central-02 (work in
              progress), June 2007.

   [RFC2827]  Ferguson, P. and D. Senie, "Network Ingress Filtering:
              Defeating Denial of Service Attacks which employ IP Source
              Address Spoofing", BCP 38, RFC 2827, May 2000.


Appendix A.  Acknowledgements

   Authors would like to thank to Dave Thaler, Pekka Savola, Remi Denis-
   Courmont and the members of 6man's address selection design team for
   their invaluable contributions to this document.


Appendix B.  Discussion

B.1.  Centrally assigned ULA

   Discussion:  Centrally assigned ULA [I-D.ietf-ipv6-ula-central] is
      proposed, and assigned fc00::/8.  Using the different labels for
      fc00::/8 and fd00::/8 makes sense if we can assume the same kind
      of address block is assigned in the same or adjacent network.




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      However, the way of assignment and network adjancency may not have
      any relationships.

B.2.  6to4, Teredo, and IPv4 prioritization

   Discussion:  Regarding the prioritization between IPv4 and these
      transitional mechanisms, the connectivity of them are recently
      known to be worse than IPv4.  These mechiansms are said to be the
      last resort access to IPv6 resources.  While 6to4 should have
      higher precedence over Teredo, in that 6to4 host to 6to4 host
      communication can be over IPv4, which can result in more optimal
      path, and 6to4 does not need NAT traversal.

B.3.  Deprecated address

   Discussion:  These addresses was removed from the current
      specification.  So, it should not be treated differently,
      especially if we think about future re-use of these address
      blocks.

      Considering the inappropriate use of these address blocks
      especially in outdated implementations and bad effects brought by
      them, however, it should be labeled differently from the
      legitimate address blocks.
      keep this entry for the sake of backward compatibility ?

B.4.  The longest match rule

   RFC 3484 defines that the destination address selection rule 9 should
   be applied to both IPv4 and IPv6, which spoils the DNS based load
   balancing technique that is widely used in the IPv4 Internet today.

   When two or more destination addresses are acquired from one FQDN,
   the rule 9 defines that the longest matching destination and source
   address pair should be chosen.  As in RFC 1794, the DNS based load
   balancing technique is achived by not re-ordering the destination
   addresses returned from the DNS server.  The Rule 9 defines
   deterministic rule for re-ordering at hosts, hence the technique of
   RFC 1794 is not available anymore.

   Regarding this problem, there was discussion in IETF and other places
   like below.

   Discussion: The possible changes to RFC 3484 are as follows:
   1.  To delete Rule 9 completely.
   2.  To apply Rule 9 only for IPv6 and not for IPv4.  In IPv6,
       hiearchical address assignment is general principle, hence the
       longest matchin rule is beneficial in many cases.  In IPv4, as



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       stated above, the DNS based load balancing technique is widely
       used.
   3.  To apply Rule 9 for IPv6 conditionally and not for IPv4.  When
       the length of matching bits of the destination address and the
       source address is longer than N, the rule 9 is applied.
       Otherwise, the order of the destination addresses do not change.
       The N should be configurable and it should be 32 by default.
       This is simply because the two sites whose matching bit length is
       longer than 32 are probably adjacent.

   Now that IPv6 PI address is admitted in some RIRs, hierachical
   address assignment is not maintained anymore.  It seems that the
   longest matching algorithm may not worth the adverse effect of
   disalbing the DNS based load balance technique.


Appendix C.  Revision History

   02:
      Suresh Krishnan's suggestions for better english sentences were
      incorporated.
      A new source address selection rule that utilizes the next-hop
      information is included in Section 2.3.
      Site local address prefix was corrected.

   01:
      Re-structured to contain only the actual changes to RFC 3484.

   00:
      Published as a 6man working group item.

   03:
      Added acknowledgements.
      Added longest matching algorithm malfunction regarding local DNS
      round robin.
      The proposed changes section was re-structured.
      The issue of 6to4/Teredo and IPv4 prioritization was included.
      The issue of deprecated addresses was added.
      The renewed default policy table was changed accordingly.

   02:
      Added the reference to address selection design team's proposal.

   01:







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      The issue of private IPv4 address scope was added.
      The issue of ULA address scope was added.
      Discussion of longest matching rule was expanded.


Authors' Addresses

   Arifumi Matsumoto
   NTT SI Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 3334
   Email: arifumi@nttv6.net


   Jun-ya Kato
   NTT SI Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 2939
   Email: kato@syce.net


   Tomohiro Fujisaki
   NTT PF Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 7351
   Email: fujisaki@syce.net
















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--
Arifumi Matsumoto
  NGN System Architecture Project
  NTT Service Integration Laboratories
  E-mail: arifumi@nttv6.net
  TEL +81-422-59-3334 FAX +81-422-59-6364


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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Hi,

This is very important.  I'll take a look tonight hopefully.

What about the dhcp draft?

--
Tim

On 9 Mar 2011, at 10:38, Arifumi Matsumoto <arifumi@nttv6.net> wrote:

> All,
> 
> here attached the -02 version of RFC 3484 revision work.
> I'm very sorry about the long suspension on this item,
> despite your commitment on it.
> 
> If you can comment on it, I think I can incorporate it
> before the cut-off.
> 
> Kindest regards,
> 
> <draft-ietf-6man-rfc3484-revise-02.txt>
> 
> --
> Arifumi Matsumoto
>  NGN System Architecture Project
>  NTT Service Integration Laboratories
>  E-mail: arifumi@nttv6.net
>  TEL +81-422-59-3334 FAX +81-422-59-6364
> 
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt

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Hi,

I have edited the txt file, largely to tidy up the English in a few =
places.   There's nothing I disagree with in the text.   So you could =
diff the file with yours to see if you want to apply the changes.

Some other comments:

We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?

Note the address selection considerations reference is now a WG item: =
draft-ietf-6man-addr-select-considerations-02; this needs updating in =
your text.

I found this sentence a little clumsy:
"When a destination address DA, DB, and the source address of DA
   Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
   round robin load-balancing cannot function. "
Maybe it can be written a little more clearly?

Quite a few of the citations (reference labels) appear after the full =
stops in sentences, not before.   Corrected in the attached text.

Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in there...

And I would still love to see a way to add a rule to put privacy address =
preference in there.   This would be a great way to help answer the =
concerns in long email threads currently running in other lists :)

Tim


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Network Working Group                                       A. Matsumoto
Internet-Draft                                                   J. Kato
Intended status: Standards Track                             T. Fujisaki
Expires: August 25, 2011                                             NTT
                                                       February 21, 2011


         Update to RFC 3484 Default Address Selection for IPv6
                 draft-ietf-6man-rfc3484-revise-02.txt

Abstract

   RFC 3484 describes algorithms for source address selection and for
   destination address selection.  The algorithms specify default
   behavior for all Internet Protocol version 6 (IPv6) implementations.
   This document specifies a set of updates that modify the algorithms
   and fix the known defects.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 25, 2011.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as



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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.


Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Specification  . . . . . . . . . . . . . . . . . . . . . . . .  3
     2.1.  Changes related to the default policy table  . . . . . . .  3
       2.1.1.  ULA in the policy table  . . . . . . . . . . . . . . .  4
       2.1.2.  Teredo in the policy table . . . . . . . . . . . . . .  4
       2.1.3.  Deprecated addresses in the policy table . . . . . . .  4
       2.1.4.  Renewed default policy table . . . . . . . . . . . . .  4
     2.2.  The longest matching rule  . . . . . . . . . . . . . . . .  5
     2.3.  Utilize next-hop for source address selection  . . . . . .  5
     2.4.  Private IPv4 address scope . . . . . . . . . . . . . . . .  6
     2.5.  Deprecation of site-local unicast address  . . . . . . . .  6
   3.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  7
   5.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     5.1.  Normative References . . . . . . . . . . . . . . . . . . .  7
     5.2.  Informative References . . . . . . . . . . . . . . . . . .  8
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . .  8
   Appendix B.  Discussion  . . . . . . . . . . . . . . . . . . . . .  8
     B.1.  Centrally assigned ULA . . . . . . . . . . . . . . . . . .  8
     B.2.  6to4, Teredo, and IPv4 prioritization  . . . . . . . . . .  9
     B.3.  Deprecated address . . . . . . . . . . . . . . . . . . . .  9
     B.4.  The longest match rule . . . . . . . . . . . . . . . . . .  9
   Appendix C.  Revision History  . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11










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1.  Introduction

   The IPv6 addressing architecture [RFC4291] allows multiple unicast
   addresses to be assigned to interfaces.  Because of this IPv6
   implementations need to handle multiple possible source and
   destination addresses when initiating communication.  RFC 3484
   [RFC3484] specifies the default algorithms, common across all
   implementations, for selecting source and destination addresses so
   that it is easier to predict the address selection behavior.

   Since RFC 3484 was published, some issues have been identified with
   the algorithms specified there.  The issues are related to the =
longest
   match algorithm used in Rule 9 of Destination address selection
   breaking DNS round-robin techniques, and prioritization of poor IPv6
   connectivity using transition mechanisms over native IPv4
   connectivity.

   There have also been some significant changes to the IPv6 addressing
   architecture that require changes in the RFC 3484 policy table.  Such
   changes include the deprecation of site-local unicast addresses
   [RFC3879] and the IPv4-compatible IPv6 addresses, the introduction of
   Unique Local Addresses [RFC4193] etc.

   This document specifies a set of updates that modify the algorithms
   and provide fixes for the identified issues.


2.  Specification

2.1.  Changes related to the default policy table

   The default policy table is defined in RFC 3484 Section 2.1 as
   follows:

         Prefix        Precedence Label
         ::1/128               50     0
         ::/0                  40     1
         2002::/16             30     2
         ::/96                 20     3
         ::ffff:0:0/96         10     4

   The changes that should be included into the default policy table are
   those rules that are universally useful and do no harm in every
   reasonable network environment.  The changes we should consider for
   the default policy table are listed in this sub-section.

   The policy table is defined to be configurable.  If the local site
   policy needs to be different changes can be put into the policy table



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   manually or by using the auto-configuration mechanism proposed as a
   DHCP option [I-D.ietf-6man-addr-select-opt].

2.1.1.  ULAs in the policy table

   RFC 5220 [RFC5220] Section 2.1.4, 2.2.2, and 2.2.3 describes address
   selection problems related to ULAs [RFC4193]. These problems can be
   solved by either changing the scope of ULAs to site-local, or by
   adding an entry to the default policy table that has its own label
   for ULAs.

   ULAs have been specified with a global scope because the reachability
   of ULAs was intended to be restricted by the routing system.
   Since a ULA will not be exposed outside of its reachability
   domain, if a ULA is available as a candidate destination address, it
   can be expected to be reachable.  In fact, such ULA to ULA
   communication is often desired (in particular in sites where ULAs are
   intended to provide stable addresses when the global prefix may be=20
   changing) and thus needs to be prioritized.

   Therefore, the scope of ULAs should be kept global, and =
prioritization
   of ULA to ULA communication should be implemented in the policy table=20=

   by assigning a specific label for ULAs using fc00::/7.

2.1.2.  Teredo in the policy table

   Teredo [RFC4380] is defined and has been assigned 2001::/32.  This
   address block should be assigned its own label in the policy table.
   Teredo's priority should be less than or equal to 6to4, considering =
its
   characteristic of being a transitional tunnel mechanism.  Windows=20
   already implements this.

2.1.3.  Deprecated addresses in the policy table

   IPv4-compatible IPv6 addresses are deprecated [RFC4291]. IPv6 site-
   local unicast addresses are deprecated [RFC3879].  Moreover, the =
6bone
   testing address has also been phased out [RFC3701].   The issue is=20
   how we treat these outdated addresses.

2.1.4.  Renewed default policy table

   After applying these updates, the default policy table becomes:











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         Prefix        Precedence Label
         ::1/128               60     0
         fc00::/7              50     1
         ::/0                  40     2
         ::ffff:0:0/96         30     3
         2002::/16             20     4
         2001::/32             10     5
         ::/96                  1    10
         fec0::/10              1    11
         3ffe::/16              1    12

2.2.  The longest matching rule

   This issue is related to a problem with the longest matching rule, as=20=

   reported by Dave Thaler.  It is a malfunction of the DNS round-robin=20=

   technique.  It is common for both IPv4 and IPv6.

   When a destination address DA, DB, and the source address of DA
   Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
   round robin load-balancing cannot function.  By considering prefix
   lengths that are longer than the subnet prefix, this rule establishes
   preference between addresses that have no substantive differences
   between them.  The rule functions as an arbitrary tie-breaker between
   the hosts in a round robin, causing a given host to always prefer a
   given member of the round robin.

   By limiting the calculation of common prefixes to a maximum length
   equal to the length of the subnet prefix of the source address, rule
   9 can continue to favor hosts that are nearby in the network
   hierarchy without arbitrarily sorting addresses within a given
   network.  This modification could be written as follows:

   Rule 9: Use longest matching prefix.

   When DA and DB belong to the same address family (both are IPv6 or
   both are IPv4): If CommonPrefixLen(DA & Netmask(Source(DA)),
   Source(DA)) > CommonPrefixLen(DB & Netmask(Source(DB)), Source(DB)),
   then prefer DA.  Similarly, if CommonPrefixLen(DA &
   Netmask(Source(DA)), Source(DA)) < CommonPrefixLen(DB &
   Netmask(Source(DB)), Source(DB)), then prefer DB.

2.3.  Utilize next-hop for source address selection

   RFC 3484 source address selection rule 5 states that the address that
   is attached to the outgoing interface should be preferred as the
   source address.  This rule is reasonable considering the prevalence
   of Ingress Filtering described in BCP 38 [RFC2827].  This is because
   an upstream network provider usually assumes it receives those



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   packets from customers that will use the delegated addresses as their
   source addresses.

   This rule, however, is not effective in an environment such as =
described
   in RFC 5220 Section 2.1.1, where a host has multiple upstream routers
   on the same link and has addresses delegated from each upstream
 on single interface.

   So, a new rule 5.1 that utilizes next-hop information for source
   address selection is inserted just after the rule 5.

   Rule 5.1: Use an address assigned by the selected next-hop.

   If SA is assigned by the selected next-hop that will be used to send
   to D and SB is assigned by a different next-hop, then prefer SA.
   Similarly, if SB is assigned by the next-hop that will be used to
   send to D and SA is assigned by a different next-hop, then prefer SB.

2.4.  Private IPv4 address scope

   When a packet goes through a NAT, its source or destination address
   can get replaced with another address with a different scope.  It
   follows that the result of the source address selection algorithm may
   be different when the original address is replaced with the NATed
   address.

   The algorithm currently specified in RFC 3484 is based on the
   assumption that a source address with a small scope cannot reach a
   destination address with a larger scope.  This assumption does not
   hold if private IPv4 addresses and a NAT are used to reach public
   IPv4 addresses.

   Due to this assumption, in the presence of both NATed private IPv4
   address and transitional addresses (like 6to4 and Teredo), the host
   will choose the transitional IPv6 address to access dual-stack peers
   [I-D.denis-v6ops-nat-addrsel].  Choosing transitional IPv6
   connectivity over native IPv4 connectivity is not desirable.

   This issue can be fixed by changing the address scope of private IPv4
   addresses to global.  Such a change has already been implemented in
   some OSes.

2.5.  Deprecation of site-local unicast address

   RFC 3484 contains a few "site-local unicast" and "fec0::"
   descriptions.  It's better to remove examples related to site-local
   unicast addresses, or to change the examples to use ULAs.  Points



Matsumoto, et al.        Expires August 25, 2011                [Page 6]
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   that need to be re-written are:
      - the 2nd paragraph in RFC 3484 Section 3.1 describing the scope
      comparison mechanism.
      - RFC 3484 Section 10 containing examples for site-local address.


3.  Security Considerations

   No security risk is found that degrades RFC 3484.


4.  IANA Considerations

   An address type number for the policy table may have to be assigned =
by
   IANA.


5.  References

5.1.  Normative References

   [RFC1794]  Brisco, T., "DNS Support for Load Balancing", RFC 1794,
              April 1995.

   [RFC1918]  Rekhter, Y., Moskowitz, R., Karrenberg, D., Groot, G., and
              E. Lear, "Address Allocation for Private Internets",
              BCP 5, RFC 1918, February 1996.

   [RFC3484]  Draves, R., "Default Address Selection for Internet
              Protocol version 6 (IPv6)", RFC 3484, February 2003.

   [RFC3701]  Fink, R. and R. Hinden, "6bone (IPv6 Testing Address
              Allocation) Phaseout", RFC 3701, March 2004.

   [RFC3879]  Huitema, C. and B. Carpenter, "Deprecating Site Local
              Addresses", RFC 3879, September 2004.

   [RFC4193]  Hinden, R. and B. Haberman, "Unique Local IPv6 Unicast
              Addresses", RFC 4193, October 2005.

   [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
              Architecture", RFC 4291, February 2006.

   [RFC4380]  Huitema, C., "Teredo: Tunneling IPv6 over UDP through
              Network Address Translations (NATs)", RFC 4380,
              February 2006.

   [RFC5220]  Matsumoto, A., Fujisaki, T., Hiromi, R., and K. Kanayama,



Matsumoto, et al.        Expires August 25, 2011                [Page 7]
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              "Problem Statement for Default Address Selection in Multi-
              Prefix Environments: Operational Issues of RFC 3484
              Default Rules", RFC 5220, July 2008.

5.2.  Informative References

   [I-D.chown-addr-select-considerations]
              Chown, T., "Considerations for IPv6 Address Selection
              Policy Changes", draft-chown-addr-select-considerations-03
              (work in progress), July 2009.

   [I-D.denis-v6ops-nat-addrsel]
              Denis-Courmont, R., "Problems with IPv6 source address
              selection and IPv4 NATs", draft-denis-v6ops-nat-addrsel-00
              (work in progress), February 2009.

   [I-D.ietf-6man-addr-select-opt]
              Matsumoto, A., Fujisaki, T., and J. Kato, "Distributing
              Address Selection Policy using DHCPv6",
              draft-ietf-6man-addr-select-opt-00 (work in progress),
              December 2010.

   [I-D.ietf-ipv6-ula-central]
              Hinden, R., "Centrally Assigned Unique Local IPv6 Unicast
              Addresses", draft-ietf-ipv6-ula-central-02 (work in
              progress), June 2007.

   [RFC2827]  Ferguson, P. and D. Senie, "Network Ingress Filtering:
              Defeating Denial of Service Attacks which employ IP Source
              Address Spoofing", BCP 38, RFC 2827, May 2000.


Appendix A.  Acknowledgements

   The authors would like to thank to Dave Thaler, Pekka Savola, Remi =
Denis-
   Courmont and the members of 6man's address selection design team for
   their invaluable contributions to this document.


Appendix B.  Discussion

B.1.  Centrally assigned ULA

   Discussion:  Centrally assigned ULA [I-D.ietf-ipv6-ula-central] is
      proposed, and assigned fc00::/8.  Using the different labels for
      fc00::/8 and fd00::/8 makes sense if we can assume the same kind
      of address block is assigned in the same or adjacent network.




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      However, the way of assignment and network adjancency may not have
      any relationships.

B.2.  6to4, Teredo, and IPv4 prioritization

   Discussion:  Regarding the prioritization between IPv4 and these
      transitional mechanisms, their connectivity quality is recently
      known to be worse than IPv4.  These mechanisms are said to be the
      last resort access to IPv6 resources.  The 6to4 protocol should =
have
      higher precedence over Teredo, in that 6to4 host to 6to4 host
      communication runs over IPv4, which can result in a more optimal
      path, and 6to4 does not need NAT traversal.

B.3.  Deprecated address

   Discussion:  These addresses were removed from the current
      specification.  So, they should not be treated differently,
      especially if we think about future re-use of these address
      blocks.

      Considering the inappropriate use of these address blocks,
      especially in outdated implementations, and the bad effects caused
      by them, however, they should be labeled differently from the
      legitimate address blocks.
      Or should we keep this entry for the sake of backward =
compatibility?

B.4.  The longest match rule

   RFC 3484 defines that the destination address selection rule 9 should
   be applied to both IPv4 and IPv6, which spoils the DNS based load
   balancing technique that is widely used in the IPv4 Internet today.

   When two or more destination addresses are acquired from one FQDN,
   rule 9 states that the longest matching destination and source
   address pair should be chosen.  As stated RFC 1794, the DNS based =
load
   balancing technique is achieved by not re-ordering the destination
   addresses returned from the DNS server.  Rule 9 defines a
   deterministic rule for re-ordering at hosts, hence the technique of
   RFC 1794 is not available anymore.

   Regarding this problem, there was discussion in the IETF and other =
places
   that led to some different options being suggested, as listed below.

   Discussion: The possible changes to RFC 3484 are as follows:
   1.  To delete Rule 9 completely.
   2.  To apply Rule 9 only for IPv6 and not for IPv4.  In IPv6,
       hierarchical address assignment is a general principle, hence the
       longest matching rule is beneficial in many cases.  In IPv4, as



Matsumoto, et al.        Expires August 25, 2011                [Page 9]
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       stated above, the DNS based load balancing technique is widely
       used.
   3.  To apply Rule 9 for IPv6 conditionally and not for IPv4.  When
       the length of matching bits of the destination address and the
       source address is longer than N, rule 9 is applied.
       Otherwise, the order of the destination addresses do not change.
       The N should be configurable and it should be 32 by default.
       This is simply because the two sites whose matching bit length is
       longer than 32 are probably adjacent.

   Now that IPv6 PI addressing is being assigned by some RIRs, =
hierarchical
   address assignment is not fully maintained anymore.  It seems that =
the
   longest matching algorithm may not be worth the adverse effect of
   disabling the DNS based load balancing technique.


Appendix C.  Revision History

   02:
      Suresh Krishnan's suggestions for better english sentences were
      incorporated.
      A new source address selection rule that utilizes the next-hop
      information is included in Section 2.3.
      The site-local address prefix was corrected.

   01:
      Re-structured to contain only the actual changes to RFC 3484.

   00:
      Published as a 6man working group item.

   03:
      Added acknowledgements.
      Added longest matching algorithm malfunction regarding local DNS
      round robin.
      The proposed changes section was restructured.
      The issue of 6to4/Teredo and IPv4 prioritization was included.
      The issue of deprecated addresses was added.
      The renewed default policy table was changed accordingly.

   02:
      Added the reference to address selection design team's proposal.

   01:







Matsumoto, et al.        Expires August 25, 2011               [Page 10]
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Internet-Draft                 RFC3484 Bis                 February 2011


      The issue of private IPv4 address scope was added.
      The issue of ULA address scope was added.
      Discussion of longest matching rule was expanded.


Authors' Addresses

   Arifumi Matsumoto
   NTT SI Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 3334
   Email: arifumi@nttv6.net


   Jun-ya Kato
   NTT SI Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 2939
   Email: kato@syce.net


   Tomohiro Fujisaki
   NTT PF Lab
   Midori-Cho 3-9-11
   Musashino-shi, Tokyo  180-8585
   Japan

   Phone: +81 422 59 7351
   Email: fujisaki@syce.net
















Matsumoto, et al.        Expires August 25, 2011               [Page 11]
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--Apple-Mail-37--627155692
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
	charset=us-ascii



On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:

> All,
> 
> here attached the -02 version of RFC 3484 revision work.
> I'm very sorry about the long suspension on this item,
> despite your commitment on it.
> 
> If you can comment on it, I think I can incorporate it
> before the cut-off.
> 
> Kindest regards,
> 
> <draft-ietf-6man-rfc3484-revise-02.txt>
> --
> Arifumi Matsumoto
>  NGN System Architecture Project
>  NTT Service Integration Laboratories
>  E-mail: arifumi@nttv6.net
>  TEL +81-422-59-3334 FAX +81-422-59-6364
> 
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


--Apple-Mail-37--627155692--

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Hi,

First my thoughts are with everyone in Japan at this time.   I hope you =
and your families are safe.   It must be so terrible.

My question on this draft is whether we need to also take this update =
text and integrate it into a new 3484, i.e. produce a completely new RFC =
to obsolete 3484?   If so, I would be happy to be one of the editors if =
that would help.

Tim

On 14 Mar 2011, at 10:00, Internet-Drafts@ietf.org wrote:

> A New Internet-Draft is available from the on-line Internet-Drafts =
directories.
> This draft is a work item of the IPv6 Maintenance Working Group of the =
IETF.
>=20
>=20
> 	Title           : Update to RFC 3484 Default Address Selection =
for IPv6
> 	Author(s)       : A. Matsumoto, et al.
> 	Filename        : draft-ietf-6man-rfc3484-revise-02.txt
> 	Pages           : 11
> 	Date            : 2011-03-14
>=20
> RFC 3484 describes algorithms for source address selection and for
> destination address selection.  The algorithms specify default
> behavior for all Internet Protocol version 6 (IPv6) implementations.
> This document specifies a set of updates that modify the algorithms
> and provide fixes for the identified issues.
>=20
> A URL for this Internet-Draft is:
> =
http://www.ietf.org/internet-drafts/draft-ietf-6man-rfc3484-revise-02.txt
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
> Internet-Draft.
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> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


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Subject: [addr-select-dt] Status of address selection related drafts?
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Hi,

Just a quick mail to ask thoughts on what remains to be done in Prague =
for address selection drafts.

Update to RFC3484 Default Address Selection for IPv6
draft-ietf-6man-rfc3484-revise-02
- looks good to WGLC?

Distributing Address Selection Policy using DHCPv6
draft-ietf-6man-addr-select-opt-00
- looks good to WGLC?

Solution approaches for address selection problems
draft-ietf-6man-addr-select-sol-03
- useful discussion of the classes of solutions
- currently expired

Considerations for IPv6 Address Selection Policy Changes
draft-ietf-6man-addr-select-considerations-02
- justification for the approaches taken for 3484 updates and dhcp-based =
policy distribution solution
- currently expired - I will refresh it to active status - is it worth =
publishing?

Considerations of Address Selection Policy Conflicts
draft-arifumi-6man-addr-select-conflict-02
- useful discussion of how such conflicts could be handled
- currently expired

It's also worth noting that draft-troan-multihoming-without-nat66-00, =
which we felt included many of the issues we were looking at in this DT, =
offered one way to take the work forward, but it has also expired.   =
This draft cites the DHCP policy draft.

So as it stands we look set to get the 3484-bis and DHCP policy drafts =
WGLC'd, but the other docs are all likely to lapse unless we decide =
there is useful discussion captured in them worth publishing.  =20

Did I miss any drafts? Thoughts?

Tim


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Tim,

On Mar 14, 2011, at 6:51 AM, Tim Chown wrote:

> Hi,
>=20
> First my thoughts are with everyone in Japan at this time.   I hope =
you and your families are safe.   It must be so terrible.

My thoughts as well.

>=20
> My question on this draft is whether we need to also take this update =
text and integrate it into a new 3484, i.e. produce a completely new RFC =
to obsolete 3484?   If so, I would be happy to be one of the editors if =
that would help.

We do need a real update to RFC3483.

We are allocating an agenda slot in Prague.  Who will be speaking?

Thanks,
Bob


>=20
> Tim
>=20
> On 14 Mar 2011, at 10:00, Internet-Drafts@ietf.org wrote:
>=20
>> A New Internet-Draft is available from the on-line Internet-Drafts =
directories.
>> This draft is a work item of the IPv6 Maintenance Working Group of =
the IETF.
>>=20
>>=20
>> 	Title           : Update to RFC 3484 Default Address Selection =
for IPv6
>> 	Author(s)       : A. Matsumoto, et al.
>> 	Filename        : draft-ietf-6man-rfc3484-revise-02.txt
>> 	Pages           : 11
>> 	Date            : 2011-03-14
>>=20
>> RFC 3484 describes algorithms for source address selection and for
>> destination address selection.  The algorithms specify default
>> behavior for all Internet Protocol version 6 (IPv6) implementations.
>> This document specifies a set of updates that modify the algorithms
>> and provide fixes for the identified issues.
>>=20
>> A URL for this Internet-Draft is:
>> =
http://www.ietf.org/internet-drafts/draft-ietf-6man-rfc3484-revise-02.txt
>>=20
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>=20
>> Below is the data which will enable a MIME compliant mail reader
>> implementation to automatically retrieve the ASCII version of the
>> Internet-Draft.
>> <Mail Attachment>_______________________________________________
>> I-D-Announce mailing list
>> I-D-Announce@ietf.org
>> https://www.ietf.org/mailman/listinfo/i-d-announce
>> Internet-Draft directories: http://www.ietf.org/shadow.html
>> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
>=20
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


From suresh.krishnan@ericsson.com  Wed Mar 16 17:06:03 2011
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From: Suresh Krishnan <suresh.krishnan@ericsson.com>
To: Bob Hinden <bob.hinden@gmail.com>, Tim Chown <tjc@ecs.soton.ac.uk>
Date: Wed, 16 Mar 2011 20:04:44 -0400
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Hi Bob/Tim,=20

> -----Original Message-----
> From: addr-select-dt-bounces@ietf.org=20
> [mailto:addr-select-dt-bounces@ietf.org] On Behalf Of Bob Hinden
> Sent: Wednesday, March 16, 2011 4:58 PM
> To: Tim Chown
> Cc: addr-select-dt@ietf.org
> Subject: Re: [addr-select-dt] I-D=20
> Action:draft-ietf-6man-rfc3484-revise-02.txt
>=20
> Tim,
>=20
> On Mar 14, 2011, at 6:51 AM, Tim Chown wrote:
>=20
> > Hi,
> >=20
> > First my thoughts are with everyone in Japan at this time. =20
>  I hope you and your families are safe.   It must be so terrible.
>=20
> My thoughts as well.
>=20
> >=20
> > My question on this draft is whether we need to also take=20
> this update text and integrate it into a new 3484, i.e.=20
> produce a completely new RFC to obsolete 3484?   If so, I=20
> would be happy to be one of the editors if that would help.

I am also happy to help out if needed.

>=20
> We do need a real update to RFC3483.
>=20
> We are allocating an agenda slot in Prague.  Who will be speaking?

I will be in Prague and I can present if Arifumi and Tim cannot.

Cheers
Suresh

From arifumi@nttv6.net  Wed Mar 16 18:17:55 2011
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All,
thank you for your hearty messages.

We are still in such a confusion because of the
atomic power plant problem and blackout.

Regarding Prague, I probably cannot attend this
time. I appreciate if someone can represent it.

In previous e-mails, Tim suggested some important
points for this work of us, I'll reply them soon,
and I hope we can share the goals for Prague.

Kindest regards,

(2011/03/17 9:04), Suresh Krishnan wrote:
> Hi Bob/Tim,
>
>> -----Original Message-----
>> From: addr-select-dt-bounces@ietf.org
>> [mailto:addr-select-dt-bounces@ietf.org] On Behalf Of Bob Hinden
>> Sent: Wednesday, March 16, 2011 4:58 PM
>> To: Tim Chown
>> Cc: addr-select-dt@ietf.org
>> Subject: Re: [addr-select-dt] I-D
>> Action:draft-ietf-6man-rfc3484-revise-02.txt
>>
>> Tim,
>>
>> On Mar 14, 2011, at 6:51 AM, Tim Chown wrote:
>>
>>> Hi,
>>>
>>> First my thoughts are with everyone in Japan at this time.
>>   I hope you and your families are safe.   It must be so terrible.
>>
>> My thoughts as well.
>>
>>>
>>> My question on this draft is whether we need to also take
>> this update text and integrate it into a new 3484, i.e.
>> produce a completely new RFC to obsolete 3484?   If so, I
>> would be happy to be one of the editors if that would help.
>
> I am also happy to help out if needed.
>
>>
>> We do need a real update to RFC3483.
>>
>> We are allocating an agenda slot in Prague.  Who will be speaking?
>
> I will be in Prague and I can present if Arifumi and Tim cannot.
>
> Cheers
> Suresh
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


From arifumi@nttv6.net  Wed Mar 16 19:19:45 2011
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Tim,

On 2011/03/11, at 9:16, Tim Chown wrote:

> Hi,
>=20
> I have edited the txt file, largely to tidy up the English in a few =
places.   There's nothing I disagree with in the text.   So you could =
diff the file with yours to see if you want to apply the changes.

Thank you for your review and comments.
I'm sorry that I could not addressed all issues in -02.

>=20
> Some other comments:
>=20
> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?

The rfc3484-revise does not mention about the whole problem related to =
address selection, but it does focus on the present issues for RFC 3484 =
itself.

It may be helpful if we mention about the whole problem for the readers =
to grasp the big picture, too. I'll put some texts about them in the =
introduction, where problem statement and requirement, and the solution =
documents will be referenced.

> Note the address selection considerations reference is now a WG item: =
draft-ietf-6man-addr-select-considerations-02; this needs updating in =
your text.

Applied.

>=20
> I found this sentence a little clumsy:
> "When a destination address DA, DB, and the source address of DA
>   Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
>   round robin load-balancing cannot function. "
> Maybe it can be written a little more clearly?

Sorry, writing clear english is always an assignment for me. X(

How about the following text ?

"When a destination address DA, DB and the source address S are on the
same subnet, the present longest matching rule always choose the same
destination address."

> Quite a few of the citations (reference labels) appear after the full =
stops in sentences, not before.   Corrected in the attached text.

I hope all were corrected.

>=20
> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in there...

I do not know.
Do we see 2001:db8:: addresses on a real packets ?

> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)

Do you think it should be addressed in RFC 3484 revision, or in the =
policy distribution draft, or totally different way ?

Kindest regards,

>=20
> Tim
>=20
> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>=20
> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>=20
>> All,
>>=20
>> here attached the -02 version of RFC 3484 revision work.
>> I'm very sorry about the long suspension on this item,
>> despite your commitment on it.
>>=20
>> If you can comment on it, I think I can incorporate it
>> before the cut-off.
>>=20
>> Kindest regards,
>>=20
>> <draft-ietf-6man-rfc3484-revise-02.txt>
>> --
>> Arifumi Matsumoto
>> NGN System Architecture Project
>> NTT Service Integration Laboratories
>> E-mail: arifumi@nttv6.net
>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>=20
> _______________________________________________
> addr-select-dt mailing list
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From arifumi@nttv6.net  Wed Mar 16 22:08:40 2011
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To: Tim Chown <tjc@ecs.soton.ac.uk>
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Subject: Re: [addr-select-dt] Status of address selection related drafts?
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Hi,

On 2011/03/14, at 23:02, Tim Chown wrote:

> Hi,
>=20
> Just a quick mail to ask thoughts on what remains to be done in Prague =
for address selection drafts.
>=20
> Update to RFC3484 Default Address Selection for IPv6
> draft-ietf-6man-rfc3484-revise-02
> - looks good to WGLC?

Yes, I think WGLC on this item should be started at Prague.

> Distributing Address Selection Policy using DHCPv6
> draft-ietf-6man-addr-select-opt-00
> - looks good to WGLC?

WGLC in pararel with rfc3484-revise should be fine.

> Solution approaches for address selection problems
> draft-ietf-6man-addr-select-sol-03
> - useful discussion of the classes of solutions
> - currently expired

I feel, this time, the above two documents should be focused.

> Considerations for IPv6 Address Selection Policy Changes
> draft-ietf-6man-addr-select-considerations-02
> - justification for the approaches taken for 3484 updates and =
dhcp-based policy distribution solution
> - currently expired - I will refresh it to active status - is it worth =
publishing?

If the first 2 documents go well, this document needs not necessarily =
published.

> Considerations of Address Selection Policy Conflicts
> draft-arifumi-6man-addr-select-conflict-02
> - useful discussion of how such conflicts could be handled
> - currently expired

This item explored advanced way of policy merging.
But, basically we've reached a conclusion that the any kinds of policy =
merging=20
involves conflict, so the policy merging should be avoided by default.

> It's also worth noting that draft-troan-multihoming-without-nat66-00, =
which we felt included many of the issues we were looking at in this DT, =
offered one way to take the work forward, but it has also expired.   =
This draft cites the DHCP policy draft.

This document was accepted as wg item in v6ops.

> So as it stands we look set to get the 3484-bis and DHCP policy drafts =
WGLC'd, but the other docs are all likely to lapse unless we decide =
there is useful discussion captured in them worth publishing.  =20
>=20
> Did I miss any drafts? Thoughts?

Thanks for summarizing these up.


>=20
> Tim
>=20
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


From hiromi@inetcore.com  Thu Mar 24 22:42:39 2011
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Hi list,

I did only read original Arifumi's document.

I also feel DA,DB and S description is a little bit confusing.
My understanding is here;

             DA(s,d)         DB(s',d')

              |              |
 subnet P(S,D) -------------------------

 prefix P is same for DA,DB and it can be described as s == s'. Is this
true? If yes, how about write their network factor into small letter?

But as for DNS round robin, current major OSs follows RFC3484 Rule9 and
neglect DNS information. RFC3483 rule9 is first and if someone wants to
utilize DNS round robin, 3484 policy table(disable subnet
prioritization) can be changed is the better indication I suppose.

Informative Referece; http://support.microsoft.com/kb/968920

Don't you put some note above that?

(2011/03/17 11:31), Arifumi Matsumoto wrote:
> Tim,
> 
> On 2011/03/11, at 9:16, Tim Chown wrote:
> 
>> Hi,
>>
>> I have edited the txt file, largely to tidy up the English in a few places.   There's nothing I disagree with in the text.   So you could diff the file with yours to see if you want to apply the changes.
> 
> Thank you for your review and comments.
> I'm sorry that I could not addressed all issues in -02.
> 
>>
>> Some other comments:
>>
>> We don't cite draft-ietf-6man-addr-select-sol-03 or draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    Should probably have a final pass through those to ensure everything is captured in the 3484 bis text?
> 
> The rfc3484-revise does not mention about the whole problem related to address selection, but it does focus on the present issues for RFC 3484 itself.
> 
> It may be helpful if we mention about the whole problem for the readers to grasp the big picture, too. I'll put some texts about them in the introduction, where problem statement and requirement, and the solution documents will be referenced.
> 
>> Note the address selection considerations reference is now a WG item: draft-ietf-6man-addr-select-considerations-02; this needs updating in your text.
> 
> Applied.
> 
>>
>> I found this sentence a little clumsy:
>> "When a destination address DA, DB, and the source address of DA
>>   Source(DA) are on the same subnet and Source(DA) == Source(DB), DNS
>>   round robin load-balancing cannot function. "
>> Maybe it can be written a little more clearly?
> 
> Sorry, writing clear english is always an assignment for me. X(
> 
> How about the following text ?
> 
> "When a destination address DA, DB and the source address S are on the
> same subnet, the present longest matching rule always choose the same
> destination address."
> 
>> Quite a few of the citations (reference labels) appear after the full stops in sentences, not before.   Corrected in the attached text.
> 
> I hope all were corrected.
> 
>>
>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in there...
> 
> I do not know.
> Do we see 2001:db8:: addresses on a real packets ?
> 
>> And I would still love to see a way to add a rule to put privacy address preference in there.   This would be a great way to help answer the concerns in long email threads currently running in other lists :)
> 
> Do you think it should be addressed in RFC 3484 revision, or in the policy distribution draft, or totally different way ?
> 
> Kindest regards,
> 
>>
>> Tim
>>
>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>
>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>
>>> All,
>>>
>>> here attached the -02 version of RFC 3484 revision work.
>>> I'm very sorry about the long suspension on this item,
>>> despite your commitment on it.
>>>
>>> If you can comment on it, I think I can incorporate it
>>> before the cut-off.
>>>
>>> Kindest regards,
>>>
>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>> --
>>> Arifumi Matsumoto
>>> NGN System Architecture Project
>>> NTT Service Integration Laboratories
>>> E-mail: arifumi@nttv6.net
>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
> 
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


-- 
----------
Ruri Hiromi
INTEC Systems Institute, Inc.

From arifumi@nttv6.net  Thu Mar 24 23:22:44 2011
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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X-List-Received-Date: Fri, 25 Mar 2011 06:22:44 -0000

Hiromi-san,
thank you for your comment.

First of all, you are commenting about the following rule, right ?

>>>=20
>>> I found this sentence a little clumsy:
>>> "When a destination address DA, DB, and the source address of DA
>>>  Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
>>>  round robin load-balancing cannot function. "
>>> Maybe it can be written a little more clearly?
>>=20
>> Sorry, writing clear english is always an assignment for me. X(
>>=20
>> How about the following text ?
>>=20
>> "When a destination address DA, DB and the source address S are on =
the
>> same subnet, the present longest matching rule always choose the same
>> destination address."



> Hi list,
>=20
> I did only read original Arifumi's document.
>=20
> I also feel DA,DB and S description is a little bit confusing.
> My understanding is here;
>=20
>             DA(s,d)         DB(s',d')
>=20
>              |              |
> subnet P(S,D) -------------------------
>=20
> prefix P is same for DA,DB and it can be described as s =3D=3D s'. Is =
this
> true?

I failed to see what DA(s,d) means here.
Also the meaning of P(S,D).

> If yes, how about write their network factor into small letter?

I appreciate if you can elaborate on this.

> But as for DNS round robin, current major OSs follows RFC3484 Rule9 =
and
> neglect DNS information. RFC3483 rule9 is first and if someone wants =
to
> utilize DNS round robin, 3484 policy table(disable subnet
> prioritization) can be changed is the better indication I suppose.

What you mean here is that you want a switch to enable/disable rule 9,=20=

that is the longest matching rule, and want to switch on/off it =
remotely, right ?

My understanding about this issue of rule 9 is,
- This is basically a remote side policy.
  That is, it should be a server side policy, whether rule 9
  is preferable or not.
- The local network administrator basically does not care about this
  behavior of destination address selection, as far as the destination
  site is not in his administration site.=20

So, I suppose there is not so much need of local switch of rule 9.
What we need to discuss is what the universal rule about longest
match should be.

> Informative Referece; http://support.microsoft.com/kb/968920
>=20
> Don't you put some note above that?

Thank you for information.
I do not quite understand what this configuration does.
If if I put this in my registry, my machine disables rule 9 ?
I do not think such a thing is fully described by the word
"subnet prioritization" in this page.

Regards,

>=20
> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>> Tim,
>>=20
>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>=20
>>> Hi,
>>>=20
>>> I have edited the txt file, largely to tidy up the English in a few =
places.   There's nothing I disagree with in the text.   So you could =
diff the file with yours to see if you want to apply the changes.
>>=20
>> Thank you for your review and comments.
>> I'm sorry that I could not addressed all issues in -02.
>>=20
>>>=20
>>> Some other comments:
>>>=20
>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>=20
>> The rfc3484-revise does not mention about the whole problem related =
to address selection, but it does focus on the present issues for RFC =
3484 itself.
>>=20
>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>=20
>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>=20
>> Applied.
>>=20
>>>=20
>>> I found this sentence a little clumsy:
>>> "When a destination address DA, DB, and the source address of DA
>>>  Source(DA) are on the same subnet and Source(DA) =3D=3D Source(DB), =
DNS
>>>  round robin load-balancing cannot function. "
>>> Maybe it can be written a little more clearly?
>>=20
>> Sorry, writing clear english is always an assignment for me. X(
>>=20
>> How about the following text ?
>>=20
>> "When a destination address DA, DB and the source address S are on =
the
>> same subnet, the present longest matching rule always choose the same
>> destination address."
>>=20
>>> Quite a few of the citations (reference labels) appear after the =
full stops in sentences, not before.   Corrected in the attached text.
>>=20
>> I hope all were corrected.
>>=20
>>>=20
>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>=20
>> I do not know.
>> Do we see 2001:db8:: addresses on a real packets ?
>>=20
>>> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)
>>=20
>> Do you think it should be addressed in RFC 3484 revision, or in the =
policy distribution draft, or totally different way ?
>>=20
>> Kindest regards,
>>=20
>>>=20
>>> Tim
>>>=20
>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>=20
>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>=20
>>>> All,
>>>>=20
>>>> here attached the -02 version of RFC 3484 revision work.
>>>> I'm very sorry about the long suspension on this item,
>>>> despite your commitment on it.
>>>>=20
>>>> If you can comment on it, I think I can incorporate it
>>>> before the cut-off.
>>>>=20
>>>> Kindest regards,
>>>>=20
>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>> --
>>>> Arifumi Matsumoto
>>>> NGN System Architecture Project
>>>> NTT Service Integration Laboratories
>>>> E-mail: arifumi@nttv6.net
>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>=20
>=20
> --=20
> ----------
> Ruri Hiromi
> INTEC Systems Institute, Inc.
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


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From brian@innovationslab.net  Fri Mar 25 04:41:30 2011
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Date: Fri, 25 Mar 2011 07:42:59 -0400
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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All,
     This discussion should be occurring on the 6man mailing list.  As
the chairs noted a few months ago, the DT has completed its task and the
resulting documents should be discussed with the entire WG.  Please move
this discussion to the ipv6@ietf.org mailing list so that the entire WG
can participate.

Regards,
Brian & Bob

On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
> Hiromi-san,
> thank you for your comment.
> 
> First of all, you are commenting about the following rule, right ?
> 
>>>>
>>>> I found this sentence a little clumsy:
>>>> "When a destination address DA, DB, and the source address of DA
>>>>  Source(DA) are on the same subnet and Source(DA) == Source(DB), DNS
>>>>  round robin load-balancing cannot function. "
>>>> Maybe it can be written a little more clearly?
>>>
>>> Sorry, writing clear english is always an assignment for me. X(
>>>
>>> How about the following text ?
>>>
>>> "When a destination address DA, DB and the source address S are on the
>>> same subnet, the present longest matching rule always choose the same
>>> destination address."
> 
> 
> 
>> Hi list,
>>
>> I did only read original Arifumi's document.
>>
>> I also feel DA,DB and S description is a little bit confusing.
>> My understanding is here;
>>
>>             DA(s,d)         DB(s',d')
>>
>>              |              |
>> subnet P(S,D) -------------------------
>>
>> prefix P is same for DA,DB and it can be described as s == s'. Is this
>> true?
> 
> I failed to see what DA(s,d) means here.
> Also the meaning of P(S,D).
> 
>> If yes, how about write their network factor into small letter?
> 
> I appreciate if you can elaborate on this.
> 
>> But as for DNS round robin, current major OSs follows RFC3484 Rule9 and
>> neglect DNS information. RFC3483 rule9 is first and if someone wants to
>> utilize DNS round robin, 3484 policy table(disable subnet
>> prioritization) can be changed is the better indication I suppose.
> 
> What you mean here is that you want a switch to enable/disable rule 9, 
> that is the longest matching rule, and want to switch on/off it remotely, right ?
> 
> My understanding about this issue of rule 9 is,
> - This is basically a remote side policy.
>   That is, it should be a server side policy, whether rule 9
>   is preferable or not.
> - The local network administrator basically does not care about this
>   behavior of destination address selection, as far as the destination
>   site is not in his administration site. 
> 
> So, I suppose there is not so much need of local switch of rule 9.
> What we need to discuss is what the universal rule about longest
> match should be.
> 
>> Informative Referece; http://support.microsoft.com/kb/968920
>>
>> Don't you put some note above that?
> 
> Thank you for information.
> I do not quite understand what this configuration does.
> If if I put this in my registry, my machine disables rule 9 ?
> I do not think such a thing is fully described by the word
> "subnet prioritization" in this page.
> 
> Regards,
> 
>>
>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>> Tim,
>>>
>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>
>>>> Hi,
>>>>
>>>> I have edited the txt file, largely to tidy up the English in a few places.   There's nothing I disagree with in the text.   So you could diff the file with yours to see if you want to apply the changes.
>>>
>>> Thank you for your review and comments.
>>> I'm sorry that I could not addressed all issues in -02.
>>>
>>>>
>>>> Some other comments:
>>>>
>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    Should probably have a final pass through those to ensure everything is captured in the 3484 bis text?
>>>
>>> The rfc3484-revise does not mention about the whole problem related to address selection, but it does focus on the present issues for RFC 3484 itself.
>>>
>>> It may be helpful if we mention about the whole problem for the readers to grasp the big picture, too. I'll put some texts about them in the introduction, where problem statement and requirement, and the solution documents will be referenced.
>>>
>>>> Note the address selection considerations reference is now a WG item: draft-ietf-6man-addr-select-considerations-02; this needs updating in your text.
>>>
>>> Applied.
>>>
>>>>
>>>> I found this sentence a little clumsy:
>>>> "When a destination address DA, DB, and the source address of DA
>>>>  Source(DA) are on the same subnet and Source(DA) == Source(DB), DNS
>>>>  round robin load-balancing cannot function. "
>>>> Maybe it can be written a little more clearly?
>>>
>>> Sorry, writing clear english is always an assignment for me. X(
>>>
>>> How about the following text ?
>>>
>>> "When a destination address DA, DB and the source address S are on the
>>> same subnet, the present longest matching rule always choose the same
>>> destination address."
>>>
>>>> Quite a few of the citations (reference labels) appear after the full stops in sentences, not before.   Corrected in the attached text.
>>>
>>> I hope all were corrected.
>>>
>>>>
>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in there...
>>>
>>> I do not know.
>>> Do we see 2001:db8:: addresses on a real packets ?
>>>
>>>> And I would still love to see a way to add a rule to put privacy address preference in there.   This would be a great way to help answer the concerns in long email threads currently running in other lists :)
>>>
>>> Do you think it should be addressed in RFC 3484 revision, or in the policy distribution draft, or totally different way ?
>>>
>>> Kindest regards,
>>>
>>>>
>>>> Tim
>>>>
>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>
>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>
>>>>> All,
>>>>>
>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>> I'm very sorry about the long suspension on this item,
>>>>> despite your commitment on it.
>>>>>
>>>>> If you can comment on it, I think I can incorporate it
>>>>> before the cut-off.
>>>>>
>>>>> Kindest regards,
>>>>>
>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>> --
>>>>> Arifumi Matsumoto
>>>>> NGN System Architecture Project
>>>>> NTT Service Integration Laboratories
>>>>> E-mail: arifumi@nttv6.net
>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>
>>
>> -- 
>> ----------
>> Ruri Hiromi
>> INTEC Systems Institute, Inc.
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
> 
> 
> --
> 松本 存史 <arifumi@nttv6.net>
>  NTTサービスインテグレーション基盤研究所
>  次世代ネットワーク方式SEプロジェクト
>   ネットワークアーキテクチャグループ
>   TEL 0422-59-3334  FAX 0422-59-6364
> 
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


From arifumi@nttv6.net  Fri Mar 25 08:27:22 2011
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From: Arifumi Matsumoto <arifumi@nttv6.net>
Date: Sat, 26 Mar 2011 00:27:37 +0900
To: Brian Haberman <brian@innovationslab.net>
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Thanks, Brian.

Technical discussion should be moved to 6man ML.


Let me start another non-technical coordination.
I'lll prepare some slides for Monday session.
Suresh, or Tim,
please make a presentation for me.
Please change the slides anyway you like.

Kindest regards,

On 2011/03/25, at 20:42, Brian Haberman wrote:

> All,
>     This discussion should be occurring on the 6man mailing list.  As
> the chairs noted a few months ago, the DT has completed its task and =
the
> resulting documents should be discussed with the entire WG.  Please =
move
> this discussion to the ipv6@ietf.org mailing list so that the entire =
WG
> can participate.
>=20
> Regards,
> Brian & Bob
>=20
> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>> Hiromi-san,
>> thank you for your comment.
>>=20
>> First of all, you are commenting about the following rule, right ?
>>=20
>>>>>=20
>>>>> I found this sentence a little clumsy:
>>>>> "When a destination address DA, DB, and the source address of DA
>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>> round robin load-balancing cannot function. "
>>>>> Maybe it can be written a little more clearly?
>>>>=20
>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>=20
>>>> How about the following text ?
>>>>=20
>>>> "When a destination address DA, DB and the source address S are on =
the
>>>> same subnet, the present longest matching rule always choose the =
same
>>>> destination address."
>>=20
>>=20
>>=20
>>> Hi list,
>>>=20
>>> I did only read original Arifumi's document.
>>>=20
>>> I also feel DA,DB and S description is a little bit confusing.
>>> My understanding is here;
>>>=20
>>>            DA(s,d)         DB(s',d')
>>>=20
>>>             |              |
>>> subnet P(S,D) -------------------------
>>>=20
>>> prefix P is same for DA,DB and it can be described as s =3D=3D s'. =
Is this
>>> true?
>>=20
>> I failed to see what DA(s,d) means here.
>> Also the meaning of P(S,D).
>>=20
>>> If yes, how about write their network factor into small letter?
>>=20
>> I appreciate if you can elaborate on this.
>>=20
>>> But as for DNS round robin, current major OSs follows RFC3484 Rule9 =
and
>>> neglect DNS information. RFC3483 rule9 is first and if someone wants =
to
>>> utilize DNS round robin, 3484 policy table(disable subnet
>>> prioritization) can be changed is the better indication I suppose.
>>=20
>> What you mean here is that you want a switch to enable/disable rule =
9,=20
>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>=20
>> My understanding about this issue of rule 9 is,
>> - This is basically a remote side policy.
>>  That is, it should be a server side policy, whether rule 9
>>  is preferable or not.
>> - The local network administrator basically does not care about this
>>  behavior of destination address selection, as far as the destination
>>  site is not in his administration site.=20
>>=20
>> So, I suppose there is not so much need of local switch of rule 9.
>> What we need to discuss is what the universal rule about longest
>> match should be.
>>=20
>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>=20
>>> Don't you put some note above that?
>>=20
>> Thank you for information.
>> I do not quite understand what this configuration does.
>> If if I put this in my registry, my machine disables rule 9 ?
>> I do not think such a thing is fully described by the word
>> "subnet prioritization" in this page.
>>=20
>> Regards,
>>=20
>>>=20
>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>> Tim,
>>>>=20
>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>=20
>>>>> Hi,
>>>>>=20
>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>=20
>>>> Thank you for your review and comments.
>>>> I'm sorry that I could not addressed all issues in -02.
>>>>=20
>>>>>=20
>>>>> Some other comments:
>>>>>=20
>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>=20
>>>> The rfc3484-revise does not mention about the whole problem related =
to address selection, but it does focus on the present issues for RFC =
3484 itself.
>>>>=20
>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>=20
>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>=20
>>>> Applied.
>>>>=20
>>>>>=20
>>>>> I found this sentence a little clumsy:
>>>>> "When a destination address DA, DB, and the source address of DA
>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>> round robin load-balancing cannot function. "
>>>>> Maybe it can be written a little more clearly?
>>>>=20
>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>=20
>>>> How about the following text ?
>>>>=20
>>>> "When a destination address DA, DB and the source address S are on =
the
>>>> same subnet, the present longest matching rule always choose the =
same
>>>> destination address."
>>>>=20
>>>>> Quite a few of the citations (reference labels) appear after the =
full stops in sentences, not before.   Corrected in the attached text.
>>>>=20
>>>> I hope all were corrected.
>>>>=20
>>>>>=20
>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>=20
>>>> I do not know.
>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>=20
>>>>> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)
>>>>=20
>>>> Do you think it should be addressed in RFC 3484 revision, or in the =
policy distribution draft, or totally different way ?
>>>>=20
>>>> Kindest regards,
>>>>=20
>>>>>=20
>>>>> Tim
>>>>>=20
>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>=20
>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>=20
>>>>>> All,
>>>>>>=20
>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>> I'm very sorry about the long suspension on this item,
>>>>>> despite your commitment on it.
>>>>>>=20
>>>>>> If you can comment on it, I think I can incorporate it
>>>>>> before the cut-off.
>>>>>>=20
>>>>>> Kindest regards,
>>>>>>=20
>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>> --
>>>>>> Arifumi Matsumoto
>>>>>> NGN System Architecture Project
>>>>>> NTT Service Integration Laboratories
>>>>>> E-mail: arifumi@nttv6.net
>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>>=20
>>> --=20
>>> ----------
>>> Ruri Hiromi
>>> INTEC Systems Institute, Inc.
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
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>>=20
>>=20
>>=20
>> _______________________________________________
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>=20
> _______________________________________________
> addr-select-dt mailing list
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> https://www.ietf.org/mailman/listinfo/addr-select-dt
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From arifumi@nttv6.net  Sun Mar 27 02:42:12 2011
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From: Arifumi Matsumoto <arifumi@nttv6.net>
Date: Sun, 27 Mar 2011 18:39:06 +0900
To: Suresh Krishnan <suresh.krishnan@ericsson.com>, Tim Chown <tjc@ecs.soton.ac.uk>
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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I put together slides for Monday.
Please take a look at the attached file.

It looks Tim did not respond to me, so
Suresh may be the only person who is in Prague.

If you have any question about the slides, please ask me.
I'll try to be available on jabber.
arifumi@jabber.org

Kindest regards,

--Apple-Mail-16-788999360
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On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:

> Thanks, Brian.
>=20
> Technical discussion should be moved to 6man ML.
>=20
>=20
> Let me start another non-technical coordination.
> I'lll prepare some slides for Monday session.
> Suresh, or Tim,
> please make a presentation for me.
> Please change the slides anyway you like.
>=20
> Kindest regards,
>=20
> On 2011/03/25, at 20:42, Brian Haberman wrote:
>=20
>> All,
>>    This discussion should be occurring on the 6man mailing list.  As
>> the chairs noted a few months ago, the DT has completed its task and =
the
>> resulting documents should be discussed with the entire WG.  Please =
move
>> this discussion to the ipv6@ietf.org mailing list so that the entire =
WG
>> can participate.
>>=20
>> Regards,
>> Brian & Bob
>>=20
>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>> Hiromi-san,
>>> thank you for your comment.
>>>=20
>>> First of all, you are commenting about the following rule, right ?
>>>=20
>>>>>>=20
>>>>>> I found this sentence a little clumsy:
>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>> round robin load-balancing cannot function. "
>>>>>> Maybe it can be written a little more clearly?
>>>>>=20
>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>=20
>>>>> How about the following text ?
>>>>>=20
>>>>> "When a destination address DA, DB and the source address S are on =
the
>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>> destination address."
>>>=20
>>>=20
>>>=20
>>>> Hi list,
>>>>=20
>>>> I did only read original Arifumi's document.
>>>>=20
>>>> I also feel DA,DB and S description is a little bit confusing.
>>>> My understanding is here;
>>>>=20
>>>>           DA(s,d)         DB(s',d')
>>>>=20
>>>>            |              |
>>>> subnet P(S,D) -------------------------
>>>>=20
>>>> prefix P is same for DA,DB and it can be described as s =3D=3D s'. =
Is this
>>>> true?
>>>=20
>>> I failed to see what DA(s,d) means here.
>>> Also the meaning of P(S,D).
>>>=20
>>>> If yes, how about write their network factor into small letter?
>>>=20
>>> I appreciate if you can elaborate on this.
>>>=20
>>>> But as for DNS round robin, current major OSs follows RFC3484 Rule9 =
and
>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>> prioritization) can be changed is the better indication I suppose.
>>>=20
>>> What you mean here is that you want a switch to enable/disable rule =
9,=20
>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>=20
>>> My understanding about this issue of rule 9 is,
>>> - This is basically a remote side policy.
>>> That is, it should be a server side policy, whether rule 9
>>> is preferable or not.
>>> - The local network administrator basically does not care about this
>>> behavior of destination address selection, as far as the destination
>>> site is not in his administration site.=20
>>>=20
>>> So, I suppose there is not so much need of local switch of rule 9.
>>> What we need to discuss is what the universal rule about longest
>>> match should be.
>>>=20
>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>=20
>>>> Don't you put some note above that?
>>>=20
>>> Thank you for information.
>>> I do not quite understand what this configuration does.
>>> If if I put this in my registry, my machine disables rule 9 ?
>>> I do not think such a thing is fully described by the word
>>> "subnet prioritization" in this page.
>>>=20
>>> Regards,
>>>=20
>>>>=20
>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>> Tim,
>>>>>=20
>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>=20
>>>>>> Hi,
>>>>>>=20
>>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>=20
>>>>> Thank you for your review and comments.
>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>=20
>>>>>>=20
>>>>>> Some other comments:
>>>>>>=20
>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>=20
>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>=20
>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>=20
>>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>>=20
>>>>> Applied.
>>>>>=20
>>>>>>=20
>>>>>> I found this sentence a little clumsy:
>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>> round robin load-balancing cannot function. "
>>>>>> Maybe it can be written a little more clearly?
>>>>>=20
>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>=20
>>>>> How about the following text ?
>>>>>=20
>>>>> "When a destination address DA, DB and the source address S are on =
the
>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>> destination address."
>>>>>=20
>>>>>> Quite a few of the citations (reference labels) appear after the =
full stops in sentences, not before.   Corrected in the attached text.
>>>>>=20
>>>>> I hope all were corrected.
>>>>>=20
>>>>>>=20
>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>=20
>>>>> I do not know.
>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>=20
>>>>>> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)
>>>>>=20
>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>=20
>>>>> Kindest regards,
>>>>>=20
>>>>>>=20
>>>>>> Tim
>>>>>>=20
>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>=20
>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>=20
>>>>>>> All,
>>>>>>>=20
>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>> despite your commitment on it.
>>>>>>>=20
>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>> before the cut-off.
>>>>>>>=20
>>>>>>> Kindest regards,
>>>>>>>=20
>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>> --
>>>>>>> Arifumi Matsumoto
>>>>>>> NGN System Architecture Project
>>>>>>> NTT Service Integration Laboratories
>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>>=20
>>>> --=20
>>>> ----------
>>>> Ruri Hiromi
>>>> INTEC Systems Institute, Inc.
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>>=20
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>=20
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


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From: Bob Hinden <bob.hinden@gmail.com>
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To: Arifumi Matsumoto <arifumi@nttv6.net>
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Arifumi-san,

Thanks for the slides.

Is Suresh going to do the presentation?

Thanks,
Bob

On Mar 27, 2011, at 11:39 AM, Arifumi Matsumoto wrote:

> I put together slides for Monday.
> Please take a look at the attached file.
>=20
> It looks Tim did not respond to me, so
> Suresh may be the only person who is in Prague.
>=20
> If you have any question about the slides, please ask me.
> I'll try to be available on jabber.
> arifumi@jabber.org
>=20
> Kindest regards,
> <ietf80-rfc3484.ppt>
> On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:
>=20
>> Thanks, Brian.
>>=20
>> Technical discussion should be moved to 6man ML.
>>=20
>>=20
>> Let me start another non-technical coordination.
>> I'lll prepare some slides for Monday session.
>> Suresh, or Tim,
>> please make a presentation for me.
>> Please change the slides anyway you like.
>>=20
>> Kindest regards,
>>=20
>> On 2011/03/25, at 20:42, Brian Haberman wrote:
>>=20
>>> All,
>>>   This discussion should be occurring on the 6man mailing list.  As
>>> the chairs noted a few months ago, the DT has completed its task and =
the
>>> resulting documents should be discussed with the entire WG.  Please =
move
>>> this discussion to the ipv6@ietf.org mailing list so that the entire =
WG
>>> can participate.
>>>=20
>>> Regards,
>>> Brian & Bob
>>>=20
>>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>>> Hiromi-san,
>>>> thank you for your comment.
>>>>=20
>>>> First of all, you are commenting about the following rule, right ?
>>>>=20
>>>>>>>=20
>>>>>>> I found this sentence a little clumsy:
>>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>> round robin load-balancing cannot function. "
>>>>>>> Maybe it can be written a little more clearly?
>>>>>>=20
>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>=20
>>>>>> How about the following text ?
>>>>>>=20
>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>> destination address."
>>>>=20
>>>>=20
>>>>=20
>>>>> Hi list,
>>>>>=20
>>>>> I did only read original Arifumi's document.
>>>>>=20
>>>>> I also feel DA,DB and S description is a little bit confusing.
>>>>> My understanding is here;
>>>>>=20
>>>>>          DA(s,d)         DB(s',d')
>>>>>=20
>>>>>           |              |
>>>>> subnet P(S,D) -------------------------
>>>>>=20
>>>>> prefix P is same for DA,DB and it can be described as s =3D=3D s'. =
Is this
>>>>> true?
>>>>=20
>>>> I failed to see what DA(s,d) means here.
>>>> Also the meaning of P(S,D).
>>>>=20
>>>>> If yes, how about write their network factor into small letter?
>>>>=20
>>>> I appreciate if you can elaborate on this.
>>>>=20
>>>>> But as for DNS round robin, current major OSs follows RFC3484 =
Rule9 and
>>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>>> prioritization) can be changed is the better indication I suppose.
>>>>=20
>>>> What you mean here is that you want a switch to enable/disable rule =
9,=20
>>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>>=20
>>>> My understanding about this issue of rule 9 is,
>>>> - This is basically a remote side policy.
>>>> That is, it should be a server side policy, whether rule 9
>>>> is preferable or not.
>>>> - The local network administrator basically does not care about =
this
>>>> behavior of destination address selection, as far as the =
destination
>>>> site is not in his administration site.=20
>>>>=20
>>>> So, I suppose there is not so much need of local switch of rule 9.
>>>> What we need to discuss is what the universal rule about longest
>>>> match should be.
>>>>=20
>>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>>=20
>>>>> Don't you put some note above that?
>>>>=20
>>>> Thank you for information.
>>>> I do not quite understand what this configuration does.
>>>> If if I put this in my registry, my machine disables rule 9 ?
>>>> I do not think such a thing is fully described by the word
>>>> "subnet prioritization" in this page.
>>>>=20
>>>> Regards,
>>>>=20
>>>>>=20
>>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>>> Tim,
>>>>>>=20
>>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>>=20
>>>>>>> Hi,
>>>>>>>=20
>>>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>>=20
>>>>>> Thank you for your review and comments.
>>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>>=20
>>>>>>>=20
>>>>>>> Some other comments:
>>>>>>>=20
>>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>>=20
>>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>>=20
>>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>>=20
>>>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>>>=20
>>>>>> Applied.
>>>>>>=20
>>>>>>>=20
>>>>>>> I found this sentence a little clumsy:
>>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>> round robin load-balancing cannot function. "
>>>>>>> Maybe it can be written a little more clearly?
>>>>>>=20
>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>=20
>>>>>> How about the following text ?
>>>>>>=20
>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>> destination address."
>>>>>>=20
>>>>>>> Quite a few of the citations (reference labels) appear after the =
full stops in sentences, not before.   Corrected in the attached text.
>>>>>>=20
>>>>>> I hope all were corrected.
>>>>>>=20
>>>>>>>=20
>>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>>=20
>>>>>> I do not know.
>>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>>=20
>>>>>>> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)
>>>>>>=20
>>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>>=20
>>>>>> Kindest regards,
>>>>>>=20
>>>>>>>=20
>>>>>>> Tim
>>>>>>>=20
>>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>>=20
>>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>>=20
>>>>>>>> All,
>>>>>>>>=20
>>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>>> despite your commitment on it.
>>>>>>>>=20
>>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>>> before the cut-off.
>>>>>>>>=20
>>>>>>>> Kindest regards,
>>>>>>>>=20
>>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>>> --
>>>>>>>> Arifumi Matsumoto
>>>>>>>> NGN System Architecture Project
>>>>>>>> NTT Service Integration Laboratories
>>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> addr-select-dt mailing list
>>>>>>>> addr-select-dt@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>>=20
>>>>> --=20
>>>>> ----------
>>>>> Ruri Hiromi
>>>>> INTEC Systems Institute, Inc.
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>=20
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


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To: Arifumi Matsumoto <arifumi@nttv6.net>
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Cc: addr-select-dt@ietf.org
Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Hi Arifumi,

I was about to write some slides this morning, apologies for not =
confirming that before.

I will be in Prague, so can present the slides if necessary.  Let me =
know Suresh.

I'll review the slides now and maybe add one or two slides at the front =
listing the status of the 5 related drafts that I posted to the list a =
couple of weeks ago.  The 15 minute slot should be fine.

And as Brian says, we should have all future discussion on the 6man =
list.

Tim

On 27 Mar 2011, at 10:39, Arifumi Matsumoto wrote:

> I put together slides for Monday.
> Please take a look at the attached file.
>=20
> It looks Tim did not respond to me, so
> Suresh may be the only person who is in Prague.
>=20
> If you have any question about the slides, please ask me.
> I'll try to be available on jabber.
> arifumi@jabber.org
>=20
> Kindest regards,
> <ietf80-rfc3484.ppt>
> On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:
>=20
>> Thanks, Brian.
>>=20
>> Technical discussion should be moved to 6man ML.
>>=20
>>=20
>> Let me start another non-technical coordination.
>> I'lll prepare some slides for Monday session.
>> Suresh, or Tim,
>> please make a presentation for me.
>> Please change the slides anyway you like.
>>=20
>> Kindest regards,
>>=20
>> On 2011/03/25, at 20:42, Brian Haberman wrote:
>>=20
>>> All,
>>>   This discussion should be occurring on the 6man mailing list.  As
>>> the chairs noted a few months ago, the DT has completed its task and =
the
>>> resulting documents should be discussed with the entire WG.  Please =
move
>>> this discussion to the ipv6@ietf.org mailing list so that the entire =
WG
>>> can participate.
>>>=20
>>> Regards,
>>> Brian & Bob
>>>=20
>>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>>> Hiromi-san,
>>>> thank you for your comment.
>>>>=20
>>>> First of all, you are commenting about the following rule, right ?
>>>>=20
>>>>>>>=20
>>>>>>> I found this sentence a little clumsy:
>>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>> round robin load-balancing cannot function. "
>>>>>>> Maybe it can be written a little more clearly?
>>>>>>=20
>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>=20
>>>>>> How about the following text ?
>>>>>>=20
>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>> destination address."
>>>>=20
>>>>=20
>>>>=20
>>>>> Hi list,
>>>>>=20
>>>>> I did only read original Arifumi's document.
>>>>>=20
>>>>> I also feel DA,DB and S description is a little bit confusing.
>>>>> My understanding is here;
>>>>>=20
>>>>>          DA(s,d)         DB(s',d')
>>>>>=20
>>>>>           |              |
>>>>> subnet P(S,D) -------------------------
>>>>>=20
>>>>> prefix P is same for DA,DB and it can be described as s =3D=3D s'. =
Is this
>>>>> true?
>>>>=20
>>>> I failed to see what DA(s,d) means here.
>>>> Also the meaning of P(S,D).
>>>>=20
>>>>> If yes, how about write their network factor into small letter?
>>>>=20
>>>> I appreciate if you can elaborate on this.
>>>>=20
>>>>> But as for DNS round robin, current major OSs follows RFC3484 =
Rule9 and
>>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>>> prioritization) can be changed is the better indication I suppose.
>>>>=20
>>>> What you mean here is that you want a switch to enable/disable rule =
9,=20
>>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>>=20
>>>> My understanding about this issue of rule 9 is,
>>>> - This is basically a remote side policy.
>>>> That is, it should be a server side policy, whether rule 9
>>>> is preferable or not.
>>>> - The local network administrator basically does not care about =
this
>>>> behavior of destination address selection, as far as the =
destination
>>>> site is not in his administration site.=20
>>>>=20
>>>> So, I suppose there is not so much need of local switch of rule 9.
>>>> What we need to discuss is what the universal rule about longest
>>>> match should be.
>>>>=20
>>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>>=20
>>>>> Don't you put some note above that?
>>>>=20
>>>> Thank you for information.
>>>> I do not quite understand what this configuration does.
>>>> If if I put this in my registry, my machine disables rule 9 ?
>>>> I do not think such a thing is fully described by the word
>>>> "subnet prioritization" in this page.
>>>>=20
>>>> Regards,
>>>>=20
>>>>>=20
>>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>>> Tim,
>>>>>>=20
>>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>>=20
>>>>>>> Hi,
>>>>>>>=20
>>>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>>=20
>>>>>> Thank you for your review and comments.
>>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>>=20
>>>>>>>=20
>>>>>>> Some other comments:
>>>>>>>=20
>>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>>=20
>>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>>=20
>>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>>=20
>>>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>>>=20
>>>>>> Applied.
>>>>>>=20
>>>>>>>=20
>>>>>>> I found this sentence a little clumsy:
>>>>>>> "When a destination address DA, DB, and the source address of DA
>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>> round robin load-balancing cannot function. "
>>>>>>> Maybe it can be written a little more clearly?
>>>>>>=20
>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>=20
>>>>>> How about the following text ?
>>>>>>=20
>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>> destination address."
>>>>>>=20
>>>>>>> Quite a few of the citations (reference labels) appear after the =
full stops in sentences, not before.   Corrected in the attached text.
>>>>>>=20
>>>>>> I hope all were corrected.
>>>>>>=20
>>>>>>>=20
>>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>>=20
>>>>>> I do not know.
>>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>>=20
>>>>>>> And I would still love to see a way to add a rule to put privacy =
address preference in there.   This would be a great way to help answer =
the concerns in long email threads currently running in other lists :)
>>>>>>=20
>>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>>=20
>>>>>> Kindest regards,
>>>>>>=20
>>>>>>>=20
>>>>>>> Tim
>>>>>>>=20
>>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>>=20
>>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>>=20
>>>>>>>> All,
>>>>>>>>=20
>>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>>> despite your commitment on it.
>>>>>>>>=20
>>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>>> before the cut-off.
>>>>>>>>=20
>>>>>>>> Kindest regards,
>>>>>>>>=20
>>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>>> --
>>>>>>>> Arifumi Matsumoto
>>>>>>>> NGN System Architecture Project
>>>>>>>> NTT Service Integration Laboratories
>>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> addr-select-dt mailing list
>>>>>>>> addr-select-dt@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>>=20
>>>>> --=20
>>>>> ----------
>>>>> Ruri Hiromi
>>>>> INTEC Systems Institute, Inc.
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>=20


From bob.hinden@gmail.com  Sun Mar 27 03:04:01 2011
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To: Tim Chown <tjc@ecs.soton.ac.uk>
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Cc: addr-select-dt@ietf.org
Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Tim,

Please let me know who will give the talk and send me any updated slides =
later today.

Thanks,
Bob


On Mar 27, 2011, at 12:02 PM, Tim Chown wrote:

> Hi Arifumi,
>=20
> I was about to write some slides this morning, apologies for not =
confirming that before.
>=20
> I will be in Prague, so can present the slides if necessary.  Let me =
know Suresh.
>=20
> I'll review the slides now and maybe add one or two slides at the =
front listing the status of the 5 related drafts that I posted to the =
list a couple of weeks ago.  The 15 minute slot should be fine.
>=20
> And as Brian says, we should have all future discussion on the 6man =
list.
>=20
> Tim
>=20
> On 27 Mar 2011, at 10:39, Arifumi Matsumoto wrote:
>=20
>> I put together slides for Monday.
>> Please take a look at the attached file.
>>=20
>> It looks Tim did not respond to me, so
>> Suresh may be the only person who is in Prague.
>>=20
>> If you have any question about the slides, please ask me.
>> I'll try to be available on jabber.
>> arifumi@jabber.org
>>=20
>> Kindest regards,
>> <ietf80-rfc3484.ppt>
>> On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:
>>=20
>>> Thanks, Brian.
>>>=20
>>> Technical discussion should be moved to 6man ML.
>>>=20
>>>=20
>>> Let me start another non-technical coordination.
>>> I'lll prepare some slides for Monday session.
>>> Suresh, or Tim,
>>> please make a presentation for me.
>>> Please change the slides anyway you like.
>>>=20
>>> Kindest regards,
>>>=20
>>> On 2011/03/25, at 20:42, Brian Haberman wrote:
>>>=20
>>>> All,
>>>>  This discussion should be occurring on the 6man mailing list.  As
>>>> the chairs noted a few months ago, the DT has completed its task =
and the
>>>> resulting documents should be discussed with the entire WG.  Please =
move
>>>> this discussion to the ipv6@ietf.org mailing list so that the =
entire WG
>>>> can participate.
>>>>=20
>>>> Regards,
>>>> Brian & Bob
>>>>=20
>>>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>>>> Hiromi-san,
>>>>> thank you for your comment.
>>>>>=20
>>>>> First of all, you are commenting about the following rule, right ?
>>>>>=20
>>>>>>>>=20
>>>>>>>> I found this sentence a little clumsy:
>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>=20
>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>=20
>>>>>>> How about the following text ?
>>>>>>>=20
>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>>> destination address."
>>>>>=20
>>>>>=20
>>>>>=20
>>>>>> Hi list,
>>>>>>=20
>>>>>> I did only read original Arifumi's document.
>>>>>>=20
>>>>>> I also feel DA,DB and S description is a little bit confusing.
>>>>>> My understanding is here;
>>>>>>=20
>>>>>>         DA(s,d)         DB(s',d')
>>>>>>=20
>>>>>>          |              |
>>>>>> subnet P(S,D) -------------------------
>>>>>>=20
>>>>>> prefix P is same for DA,DB and it can be described as s =3D=3D =
s'. Is this
>>>>>> true?
>>>>>=20
>>>>> I failed to see what DA(s,d) means here.
>>>>> Also the meaning of P(S,D).
>>>>>=20
>>>>>> If yes, how about write their network factor into small letter?
>>>>>=20
>>>>> I appreciate if you can elaborate on this.
>>>>>=20
>>>>>> But as for DNS round robin, current major OSs follows RFC3484 =
Rule9 and
>>>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>>>> prioritization) can be changed is the better indication I =
suppose.
>>>>>=20
>>>>> What you mean here is that you want a switch to enable/disable =
rule 9,=20
>>>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>>>=20
>>>>> My understanding about this issue of rule 9 is,
>>>>> - This is basically a remote side policy.
>>>>> That is, it should be a server side policy, whether rule 9
>>>>> is preferable or not.
>>>>> - The local network administrator basically does not care about =
this
>>>>> behavior of destination address selection, as far as the =
destination
>>>>> site is not in his administration site.=20
>>>>>=20
>>>>> So, I suppose there is not so much need of local switch of rule 9.
>>>>> What we need to discuss is what the universal rule about longest
>>>>> match should be.
>>>>>=20
>>>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>>>=20
>>>>>> Don't you put some note above that?
>>>>>=20
>>>>> Thank you for information.
>>>>> I do not quite understand what this configuration does.
>>>>> If if I put this in my registry, my machine disables rule 9 ?
>>>>> I do not think such a thing is fully described by the word
>>>>> "subnet prioritization" in this page.
>>>>>=20
>>>>> Regards,
>>>>>=20
>>>>>>=20
>>>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>>>> Tim,
>>>>>>>=20
>>>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>>>=20
>>>>>>>> Hi,
>>>>>>>>=20
>>>>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>>>=20
>>>>>>> Thank you for your review and comments.
>>>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Some other comments:
>>>>>>>>=20
>>>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>>>=20
>>>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>>>=20
>>>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>>>=20
>>>>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>>>>=20
>>>>>>> Applied.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> I found this sentence a little clumsy:
>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>=20
>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>=20
>>>>>>> How about the following text ?
>>>>>>>=20
>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>>> destination address."
>>>>>>>=20
>>>>>>>> Quite a few of the citations (reference labels) appear after =
the full stops in sentences, not before.   Corrected in the attached =
text.
>>>>>>>=20
>>>>>>> I hope all were corrected.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>>>=20
>>>>>>> I do not know.
>>>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>>>=20
>>>>>>>> And I would still love to see a way to add a rule to put =
privacy address preference in there.   This would be a great way to help =
answer the concerns in long email threads currently running in other =
lists :)
>>>>>>>=20
>>>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>>>=20
>>>>>>> Kindest regards,
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Tim
>>>>>>>>=20
>>>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>>>=20
>>>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>>>=20
>>>>>>>>> All,
>>>>>>>>>=20
>>>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>>>> despite your commitment on it.
>>>>>>>>>=20
>>>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>>>> before the cut-off.
>>>>>>>>>=20
>>>>>>>>> Kindest regards,
>>>>>>>>>=20
>>>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>>>> --
>>>>>>>>> Arifumi Matsumoto
>>>>>>>>> NGN System Architecture Project
>>>>>>>>> NTT Service Integration Laboratories
>>>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>>>=20
>>>>>>>>> _______________________________________________
>>>>>>>>> addr-select-dt mailing list
>>>>>>>>> addr-select-dt@ietf.org
>>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> addr-select-dt mailing list
>>>>>>>> addr-select-dt@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>>=20
>>>>>> --=20
>>>>>> ----------
>>>>>> Ruri Hiromi
>>>>>> INTEC Systems Institute, Inc.
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>=20
> _______________________________________________
> addr-select-dt mailing list
> addr-select-dt@ietf.org
> https://www.ietf.org/mailman/listinfo/addr-select-dt


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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Hi all,

Here's a version of the slides including two slides to clarify where all =
the drafts stand (i.e. we'd like to push the 3484-bis and DHCP =
distribution drafts to WGLC together, and the other drafts can expire, =
with v6ops taking up multihoming-wthout-nat66).     Also minor tweaks to =
the other slides.

I am fine to present, but also very happy for Suresh to do so.

Tim


--Apple-Mail-5-792105613
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On 27 Mar 2011, at 10:53, Bob Hinden wrote:

> Arifumi-san,
>=20
> Thanks for the slides.
>=20
> Is Suresh going to do the presentation?
>=20
> Thanks,
> Bob
>=20
> On Mar 27, 2011, at 11:39 AM, Arifumi Matsumoto wrote:
>=20
>> I put together slides for Monday.
>> Please take a look at the attached file.
>>=20
>> It looks Tim did not respond to me, so
>> Suresh may be the only person who is in Prague.
>>=20
>> If you have any question about the slides, please ask me.
>> I'll try to be available on jabber.
>> arifumi@jabber.org
>>=20
>> Kindest regards,
>> <ietf80-rfc3484.ppt>
>> On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:
>>=20
>>> Thanks, Brian.
>>>=20
>>> Technical discussion should be moved to 6man ML.
>>>=20
>>>=20
>>> Let me start another non-technical coordination.
>>> I'lll prepare some slides for Monday session.
>>> Suresh, or Tim,
>>> please make a presentation for me.
>>> Please change the slides anyway you like.
>>>=20
>>> Kindest regards,
>>>=20
>>> On 2011/03/25, at 20:42, Brian Haberman wrote:
>>>=20
>>>> All,
>>>>  This discussion should be occurring on the 6man mailing list.  As
>>>> the chairs noted a few months ago, the DT has completed its task =
and the
>>>> resulting documents should be discussed with the entire WG.  Please =
move
>>>> this discussion to the ipv6@ietf.org mailing list so that the =
entire WG
>>>> can participate.
>>>>=20
>>>> Regards,
>>>> Brian & Bob
>>>>=20
>>>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>>>> Hiromi-san,
>>>>> thank you for your comment.
>>>>>=20
>>>>> First of all, you are commenting about the following rule, right ?
>>>>>=20
>>>>>>>>=20
>>>>>>>> I found this sentence a little clumsy:
>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>=20
>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>=20
>>>>>>> How about the following text ?
>>>>>>>=20
>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>>> destination address."
>>>>>=20
>>>>>=20
>>>>>=20
>>>>>> Hi list,
>>>>>>=20
>>>>>> I did only read original Arifumi's document.
>>>>>>=20
>>>>>> I also feel DA,DB and S description is a little bit confusing.
>>>>>> My understanding is here;
>>>>>>=20
>>>>>>         DA(s,d)         DB(s',d')
>>>>>>=20
>>>>>>          |              |
>>>>>> subnet P(S,D) -------------------------
>>>>>>=20
>>>>>> prefix P is same for DA,DB and it can be described as s =3D=3D =
s'. Is this
>>>>>> true?
>>>>>=20
>>>>> I failed to see what DA(s,d) means here.
>>>>> Also the meaning of P(S,D).
>>>>>=20
>>>>>> If yes, how about write their network factor into small letter?
>>>>>=20
>>>>> I appreciate if you can elaborate on this.
>>>>>=20
>>>>>> But as for DNS round robin, current major OSs follows RFC3484 =
Rule9 and
>>>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>>>> prioritization) can be changed is the better indication I =
suppose.
>>>>>=20
>>>>> What you mean here is that you want a switch to enable/disable =
rule 9,=20
>>>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>>>=20
>>>>> My understanding about this issue of rule 9 is,
>>>>> - This is basically a remote side policy.
>>>>> That is, it should be a server side policy, whether rule 9
>>>>> is preferable or not.
>>>>> - The local network administrator basically does not care about =
this
>>>>> behavior of destination address selection, as far as the =
destination
>>>>> site is not in his administration site.=20
>>>>>=20
>>>>> So, I suppose there is not so much need of local switch of rule 9.
>>>>> What we need to discuss is what the universal rule about longest
>>>>> match should be.
>>>>>=20
>>>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>>>=20
>>>>>> Don't you put some note above that?
>>>>>=20
>>>>> Thank you for information.
>>>>> I do not quite understand what this configuration does.
>>>>> If if I put this in my registry, my machine disables rule 9 ?
>>>>> I do not think such a thing is fully described by the word
>>>>> "subnet prioritization" in this page.
>>>>>=20
>>>>> Regards,
>>>>>=20
>>>>>>=20
>>>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>>>> Tim,
>>>>>>>=20
>>>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>>>=20
>>>>>>>> Hi,
>>>>>>>>=20
>>>>>>>> I have edited the txt file, largely to tidy up the English in a =
few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>>>=20
>>>>>>> Thank you for your review and comments.
>>>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Some other comments:
>>>>>>>>=20
>>>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>>>=20
>>>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>>>=20
>>>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>>>=20
>>>>>>>> Note the address selection considerations reference is now a WG =
item: draft-ietf-6man-addr-select-considerations-02; this needs updating =
in your text.
>>>>>>>=20
>>>>>>> Applied.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> I found this sentence a little clumsy:
>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>=20
>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>=20
>>>>>>> How about the following text ?
>>>>>>>=20
>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>> same subnet, the present longest matching rule always choose the =
same
>>>>>>> destination address."
>>>>>>>=20
>>>>>>>> Quite a few of the citations (reference labels) appear after =
the full stops in sentences, not before.   Corrected in the attached =
text.
>>>>>>>=20
>>>>>>> I hope all were corrected.
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>>>=20
>>>>>>> I do not know.
>>>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>>>=20
>>>>>>>> And I would still love to see a way to add a rule to put =
privacy address preference in there.   This would be a great way to help =
answer the concerns in long email threads currently running in other =
lists :)
>>>>>>>=20
>>>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>>>=20
>>>>>>> Kindest regards,
>>>>>>>=20
>>>>>>>>=20
>>>>>>>> Tim
>>>>>>>>=20
>>>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>>>=20
>>>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>>>=20
>>>>>>>>> All,
>>>>>>>>>=20
>>>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>>>> despite your commitment on it.
>>>>>>>>>=20
>>>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>>>> before the cut-off.
>>>>>>>>>=20
>>>>>>>>> Kindest regards,
>>>>>>>>>=20
>>>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>>>> --
>>>>>>>>> Arifumi Matsumoto
>>>>>>>>> NGN System Architecture Project
>>>>>>>>> NTT Service Integration Laboratories
>>>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>>>=20
>>>>>>>>> _______________________________________________
>>>>>>>>> addr-select-dt mailing list
>>>>>>>>> addr-select-dt@ietf.org
>>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> addr-select-dt mailing list
>>>>>>>> addr-select-dt@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>>=20
>>>>>> --=20
>>>>>> ----------
>>>>>> Ruri Hiromi
>>>>>> INTEC Systems Institute, Inc.
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>=20
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>> _______________________________________________
>> addr-select-dt mailing list
>> addr-select-dt@ietf.org
>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>=20


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From: Arifumi Matsumoto <arifumi@nttv6.net>
Date: Sun, 27 Mar 2011 19:39:52 +0900
To: Tim Chown <tjc@ecs.soton.ac.uk>
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Tim,
thank you!

I agree it's nice to add your slides to the front to help people =
understand the whole story.

On 2011/03/27, at 19:30, Tim Chown wrote:

> Hi all,
>=20
> Here's a version of the slides including two slides to clarify where =
all the drafts stand (i.e. we'd like to push the 3484-bis and DHCP =
distribution drafts to WGLC together, and the other drafts can expire, =
with v6ops taking up multihoming-wthout-nat66).     Also minor tweaks to =
the other slides.
>=20
> I am fine to present, but also very happy for Suresh to do so.
>=20
> Tim
>=20
> <ietf80-rfc3484-update.ppt>
>=20
> On 27 Mar 2011, at 10:53, Bob Hinden wrote:
>=20
>> Arifumi-san,
>>=20
>> Thanks for the slides.
>>=20
>> Is Suresh going to do the presentation?
>>=20
>> Thanks,
>> Bob
>>=20
>> On Mar 27, 2011, at 11:39 AM, Arifumi Matsumoto wrote:
>>=20
>>> I put together slides for Monday.
>>> Please take a look at the attached file.
>>>=20
>>> It looks Tim did not respond to me, so
>>> Suresh may be the only person who is in Prague.
>>>=20
>>> If you have any question about the slides, please ask me.
>>> I'll try to be available on jabber.
>>> arifumi@jabber.org
>>>=20
>>> Kindest regards,
>>> <ietf80-rfc3484.ppt>
>>> On 2011/03/26, at 0:27, Arifumi Matsumoto wrote:
>>>=20
>>>> Thanks, Brian.
>>>>=20
>>>> Technical discussion should be moved to 6man ML.
>>>>=20
>>>>=20
>>>> Let me start another non-technical coordination.
>>>> I'lll prepare some slides for Monday session.
>>>> Suresh, or Tim,
>>>> please make a presentation for me.
>>>> Please change the slides anyway you like.
>>>>=20
>>>> Kindest regards,
>>>>=20
>>>> On 2011/03/25, at 20:42, Brian Haberman wrote:
>>>>=20
>>>>> All,
>>>>> This discussion should be occurring on the 6man mailing list.  As
>>>>> the chairs noted a few months ago, the DT has completed its task =
and the
>>>>> resulting documents should be discussed with the entire WG.  =
Please move
>>>>> this discussion to the ipv6@ietf.org mailing list so that the =
entire WG
>>>>> can participate.
>>>>>=20
>>>>> Regards,
>>>>> Brian & Bob
>>>>>=20
>>>>> On 3/25/11 2:23 AM, Arifumi Matsumoto wrote:
>>>>>> Hiromi-san,
>>>>>> thank you for your comment.
>>>>>>=20
>>>>>> First of all, you are commenting about the following rule, right =
?
>>>>>>=20
>>>>>>>>>=20
>>>>>>>>> I found this sentence a little clumsy:
>>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>>=20
>>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>>=20
>>>>>>>> How about the following text ?
>>>>>>>>=20
>>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>>> same subnet, the present longest matching rule always choose =
the same
>>>>>>>> destination address."
>>>>>>=20
>>>>>>=20
>>>>>>=20
>>>>>>> Hi list,
>>>>>>>=20
>>>>>>> I did only read original Arifumi's document.
>>>>>>>=20
>>>>>>> I also feel DA,DB and S description is a little bit confusing.
>>>>>>> My understanding is here;
>>>>>>>=20
>>>>>>>        DA(s,d)         DB(s',d')
>>>>>>>=20
>>>>>>>         |              |
>>>>>>> subnet P(S,D) -------------------------
>>>>>>>=20
>>>>>>> prefix P is same for DA,DB and it can be described as s =3D=3D =
s'. Is this
>>>>>>> true?
>>>>>>=20
>>>>>> I failed to see what DA(s,d) means here.
>>>>>> Also the meaning of P(S,D).
>>>>>>=20
>>>>>>> If yes, how about write their network factor into small letter?
>>>>>>=20
>>>>>> I appreciate if you can elaborate on this.
>>>>>>=20
>>>>>>> But as for DNS round robin, current major OSs follows RFC3484 =
Rule9 and
>>>>>>> neglect DNS information. RFC3483 rule9 is first and if someone =
wants to
>>>>>>> utilize DNS round robin, 3484 policy table(disable subnet
>>>>>>> prioritization) can be changed is the better indication I =
suppose.
>>>>>>=20
>>>>>> What you mean here is that you want a switch to enable/disable =
rule 9,=20
>>>>>> that is the longest matching rule, and want to switch on/off it =
remotely, right ?
>>>>>>=20
>>>>>> My understanding about this issue of rule 9 is,
>>>>>> - This is basically a remote side policy.
>>>>>> That is, it should be a server side policy, whether rule 9
>>>>>> is preferable or not.
>>>>>> - The local network administrator basically does not care about =
this
>>>>>> behavior of destination address selection, as far as the =
destination
>>>>>> site is not in his administration site.=20
>>>>>>=20
>>>>>> So, I suppose there is not so much need of local switch of rule =
9.
>>>>>> What we need to discuss is what the universal rule about longest
>>>>>> match should be.
>>>>>>=20
>>>>>>> Informative Referece; http://support.microsoft.com/kb/968920
>>>>>>>=20
>>>>>>> Don't you put some note above that?
>>>>>>=20
>>>>>> Thank you for information.
>>>>>> I do not quite understand what this configuration does.
>>>>>> If if I put this in my registry, my machine disables rule 9 ?
>>>>>> I do not think such a thing is fully described by the word
>>>>>> "subnet prioritization" in this page.
>>>>>>=20
>>>>>> Regards,
>>>>>>=20
>>>>>>>=20
>>>>>>> (2011/03/17 11:31), Arifumi Matsumoto wrote:
>>>>>>>> Tim,
>>>>>>>>=20
>>>>>>>> On 2011/03/11, at 9:16, Tim Chown wrote:
>>>>>>>>=20
>>>>>>>>> Hi,
>>>>>>>>>=20
>>>>>>>>> I have edited the txt file, largely to tidy up the English in =
a few places.   There's nothing I disagree with in the text.   So you =
could diff the file with yours to see if you want to apply the changes.
>>>>>>>>=20
>>>>>>>> Thank you for your review and comments.
>>>>>>>> I'm sorry that I could not addressed all issues in -02.
>>>>>>>>=20
>>>>>>>>>=20
>>>>>>>>> Some other comments:
>>>>>>>>>=20
>>>>>>>>> We don't cite draft-ietf-6man-addr-select-sol-03 or =
draft-ietf-v6ops-addr-select-req-07 - would this be worth doing?    =
Should probably have a final pass through those to ensure everything is =
captured in the 3484 bis text?
>>>>>>>>=20
>>>>>>>> The rfc3484-revise does not mention about the whole problem =
related to address selection, but it does focus on the present issues =
for RFC 3484 itself.
>>>>>>>>=20
>>>>>>>> It may be helpful if we mention about the whole problem for the =
readers to grasp the big picture, too. I'll put some texts about them in =
the introduction, where problem statement and requirement, and the =
solution documents will be referenced.
>>>>>>>>=20
>>>>>>>>> Note the address selection considerations reference is now a =
WG item: draft-ietf-6man-addr-select-considerations-02; this needs =
updating in your text.
>>>>>>>>=20
>>>>>>>> Applied.
>>>>>>>>=20
>>>>>>>>>=20
>>>>>>>>> I found this sentence a little clumsy:
>>>>>>>>> "When a destination address DA, DB, and the source address of =
DA
>>>>>>>>> Source(DA) are on the same subnet and Source(DA) =3D=3D =
Source(DB), DNS
>>>>>>>>> round robin load-balancing cannot function. "
>>>>>>>>> Maybe it can be written a little more clearly?
>>>>>>>>=20
>>>>>>>> Sorry, writing clear english is always an assignment for me. X(
>>>>>>>>=20
>>>>>>>> How about the following text ?
>>>>>>>>=20
>>>>>>>> "When a destination address DA, DB and the source address S are =
on the
>>>>>>>> same subnet, the present longest matching rule always choose =
the same
>>>>>>>> destination address."
>>>>>>>>=20
>>>>>>>>> Quite a few of the citations (reference labels) appear after =
the full stops in sentences, not before.   Corrected in the attached =
text.
>>>>>>>>=20
>>>>>>>> I hope all were corrected.
>>>>>>>>=20
>>>>>>>>>=20
>>>>>>>>> Do we want to add a rule for 2001:db8:: ?     If 3ffe:: is in =
there...
>>>>>>>>=20
>>>>>>>> I do not know.
>>>>>>>> Do we see 2001:db8:: addresses on a real packets ?
>>>>>>>>=20
>>>>>>>>> And I would still love to see a way to add a rule to put =
privacy address preference in there.   This would be a great way to help =
answer the concerns in long email threads currently running in other =
lists :)
>>>>>>>>=20
>>>>>>>> Do you think it should be addressed in RFC 3484 revision, or in =
the policy distribution draft, or totally different way ?
>>>>>>>>=20
>>>>>>>> Kindest regards,
>>>>>>>>=20
>>>>>>>>>=20
>>>>>>>>> Tim
>>>>>>>>>=20
>>>>>>>>> <draft-ietf-6man-rfc3484-revise-02-tc.txt>
>>>>>>>>>=20
>>>>>>>>> On 9 Mar 2011, at 10:38, Arifumi Matsumoto wrote:
>>>>>>>>>=20
>>>>>>>>>> All,
>>>>>>>>>>=20
>>>>>>>>>> here attached the -02 version of RFC 3484 revision work.
>>>>>>>>>> I'm very sorry about the long suspension on this item,
>>>>>>>>>> despite your commitment on it.
>>>>>>>>>>=20
>>>>>>>>>> If you can comment on it, I think I can incorporate it
>>>>>>>>>> before the cut-off.
>>>>>>>>>>=20
>>>>>>>>>> Kindest regards,
>>>>>>>>>>=20
>>>>>>>>>> <draft-ietf-6man-rfc3484-revise-02.txt>
>>>>>>>>>> --
>>>>>>>>>> Arifumi Matsumoto
>>>>>>>>>> NGN System Architecture Project
>>>>>>>>>> NTT Service Integration Laboratories
>>>>>>>>>> E-mail: arifumi@nttv6.net
>>>>>>>>>> TEL +81-422-59-3334 FAX +81-422-59-6364
>>>>>>>>>>=20
>>>>>>>>>> _______________________________________________
>>>>>>>>>> addr-select-dt mailing list
>>>>>>>>>> addr-select-dt@ietf.org
>>>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>>>=20
>>>>>>>>> _______________________________________________
>>>>>>>>> addr-select-dt mailing list
>>>>>>>>> addr-select-dt@ietf.org
>>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> addr-select-dt mailing list
>>>>>>>> addr-select-dt@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>>=20
>>>>>>>=20
>>>>>>> --=20
>>>>>>> ----------
>>>>>>> Ruri Hiromi
>>>>>>> INTEC Systems Institute, Inc.
>>>>>>> _______________________________________________
>>>>>>> addr-select-dt mailing list
>>>>>>> addr-select-dt@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>>=20
>>>>>>=20
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> addr-select-dt mailing list
>>>>>> addr-select-dt@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>> _______________________________________________
>>>>> addr-select-dt mailing list
>>>>> addr-select-dt@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> addr-select-dt mailing list
>>>> addr-select-dt@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>>=20
>>> _______________________________________________
>>> addr-select-dt mailing list
>>> addr-select-dt@ietf.org
>>> https://www.ietf.org/mailman/listinfo/addr-select-dt
>>=20
>=20


From suresh.krishnan@ericsson.com  Sun Mar 27 04:37:19 2011
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From: Suresh Krishnan <suresh.krishnan@ericsson.com>
To: Tim Chown <tjc@ecs.soton.ac.uk>, Bob Hinden <bob.hinden@gmail.com>
Date: Sun, 27 Mar 2011 07:36:40 -0400
Thread-Topic: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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Hi Tim,
  Great intro slides. If you will be there, I prefer that you present becau=
se I will be the minute taker for the 6man meeting.

Thanks
Suresh

> -----Original Message-----
> From: Tim Chown [mailto:tjc@ecs.soton.ac.uk]=20
> Sent: Sunday, March 27, 2011 12:31 PM
> To: Bob Hinden
> Cc: Arifumi Matsumoto; Suresh Krishnan; addr-select-dt@ietf.org
> Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
>=20
> Hi all,
>=20
> Here's a version of the slides including two slides to=20
> clarify where all the drafts stand (i.e. we'd like to push=20
> the 3484-bis and DHCP distribution drafts to WGLC together,=20
> and the other drafts can expire, with v6ops taking up=20
> multihoming-wthout-nat66).     Also minor tweaks to the other slides.
>=20
> I am fine to present, but also very happy for Suresh to do so.
>=20
> Tim
>=20
> =

From bob.hinden@gmail.com  Sun Mar 27 04:48:34 2011
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To: Suresh Krishnan <suresh.krishnan@ericsson.com>
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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OK, I will assume Tim is the speaker.

Thanks,
Bob


On Mar 27, 2011, at 1:36 PM, Suresh Krishnan wrote:

> Hi Tim,
>  Great intro slides. If you will be there, I prefer that you present =
because I will be the minute taker for the 6man meeting.
>=20
> Thanks
> Suresh
>=20
>> -----Original Message-----
>> From: Tim Chown [mailto:tjc@ecs.soton.ac.uk]=20
>> Sent: Sunday, March 27, 2011 12:31 PM
>> To: Bob Hinden
>> Cc: Arifumi Matsumoto; Suresh Krishnan; addr-select-dt@ietf.org
>> Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
>>=20
>> Hi all,
>>=20
>> Here's a version of the slides including two slides to=20
>> clarify where all the drafts stand (i.e. we'd like to push=20
>> the 3484-bis and DHCP distribution drafts to WGLC together,=20
>> and the other drafts can expire, with v6ops taking up=20
>> multihoming-wthout-nat66).     Also minor tweaks to the other slides.
>>=20
>> I am fine to present, but also very happy for Suresh to do so.
>>=20
>> Tim
>>=20
>>=20


From tjc@ecs.soton.ac.uk  Mon Mar 28 01:09:45 2011
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Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
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So just a quick update from this morning's presentation.

* On privacy extensions, two people (one was Dave Thaler) made firm =
statements that policy should only be able to be set with appropriate =
auth
* On ULAs, Brian Carpenter observed the complexity of use of ULAs =
between multiple sites
* There were no new issues raised.
* There was agreement we can move to WGLC once the two outstanding =
issues are sorted.

So I think we should now progress two separate issue threads on the 6man =
list for privacy and ULAs for 3484-bis, close those and request WGLC on =
both.

I had confirmation from Ralph that the dhc option would be WGLC'ed in =
6man and flagged in dhc for interested people to check the 6man last =
call.

So we may finally be close to finishing the work :)

Tim

On 27 Mar 2011, at 13:50, Bob Hinden wrote:

> OK, I will assume Tim is the speaker.
>=20
> Thanks,
> Bob
>=20
>=20
> On Mar 27, 2011, at 1:36 PM, Suresh Krishnan wrote:
>=20
>> Hi Tim,
>> Great intro slides. If you will be there, I prefer that you present =
because I will be the minute taker for the 6man meeting.
>>=20
>> Thanks
>> Suresh
>>=20
>>> -----Original Message-----
>>> From: Tim Chown [mailto:tjc@ecs.soton.ac.uk]=20
>>> Sent: Sunday, March 27, 2011 12:31 PM
>>> To: Bob Hinden
>>> Cc: Arifumi Matsumoto; Suresh Krishnan; addr-select-dt@ietf.org
>>> Subject: Re: [addr-select-dt] draft-ietf-6man-rfc3484-revise-02
>>>=20
>>> Hi all,
>>>=20
>>> Here's a version of the slides including two slides to=20
>>> clarify where all the drafts stand (i.e. we'd like to push=20
>>> the 3484-bis and DHCP distribution drafts to WGLC together,=20
>>> and the other drafts can expire, with v6ops taking up=20
>>> multihoming-wthout-nat66).     Also minor tweaks to the other =
slides.
>>>=20
>>> I am fine to present, but also very happy for Suresh to do so.
>>>=20
>>> Tim
>>>=20
>>>=20
>=20

