Re: Re: [dhcwg] DHCPv6 Proxy Agent

2008-11-03 Thread Joseph Hyunwook Cha
Hello, Ted. Thank you for your reply. My comments are below. 2008/11/4 Ted Lemon <[EMAIL PROTECTED]>: > On Nov 3, 2008, at 6:40 PM, Joseph Hyunwook Cha wrote: >> >> However, if the service provider provides DHCPv6 service for the internet >> connectivity of custome

DHCPv6 Proxy Agent

2008-11-03 Thread Joseph Hyunwook Cha
Hello, folks. I would like to introduce DHCPv6 proxy agent in a saparate thread. The following is a rough description regarding the DHCPv6 proxy agent. Any comments will be appreciated. 1. Motivation Under the environments where classic bridge technology can not be applicable, local hosts on t

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-11-03 Thread hyunwook cha
Hello, Teemu. Thank you for your clarification. >>Since DHCPv6 server is also able to assign multiple addresses >>to single client depending on the poliy, the host can activate >>its server with the assigned address except the one used by >>itself if it has >>DHCPv6 server installed. Then, other

Re: /128 address allocation and "localized IPv6 address space exhaustion", was RE: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-11-03 Thread hyunwook cha
Hello, all. I would like to share my interests on this issue and discuss DHCPv6 based solution more. Solutions suggested by Pekka are below. 1) run DHCPv6 again, with a different DUID or client identifier (could it get more /128's that way, 2) use DHCPv6 IAs to request multiple addresses? Then it

What is the IETF consensus on the" Brokenness of specs w.r.t. client behavior with M&O bits"

2008-10-29 Thread Joseph Hyunwook Cha
Hello, all. I would like to see what is the IETF consensus on this topic. Currently we have no further conclusion on this topic than the point that it is very difficult to choose the silver bullet among several options listed by Thomas and Ralph. However, I also believe that we need to encourag

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-29 Thread hyunwook cha
Hello, Teemu. Thank you for your clarification. > Consider cellular host case: > - host implements e.g. ND proxy and DHCPv6 PD for WAN connection sharing > - host attaches to a network where only DHCPv6 happens to be used > - host gets single /128 IPv6 address from DHCPv6 > - host tries to get som

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-23 Thread hyunwook cha
Hello, Teemu. My comments are below. 2008/10/23 <[EMAIL PROTECTED]>: > Hi, > >>-Original Message- >>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On >>Behalf Of ext Ted Lemon >>Sent: 16 October, 2008 20:49 >>To: Iljitsch van Beijnum >>Cc: David W. Hankins; [EMAIL PROTECTED]; List Mail

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-23 Thread hyunwook cha
Hello, Teemu. A few comments are added below. 2008/10/23 <[EMAIL PROTECTED]>: > Hi, > > Used link-layer does have an impact: on cellular networks the link-layer is > nowadays most often opened on-demand (i.e. when an application starts), or > quickly reopened e.g. if network connection is temp

Re: [dhcwg] Cost of multicast [was Re: Brokenness of specs w.r.t. client behavior with M&O bits]

2008-10-23 Thread hyunwook cha
Hello, David. A few comments are inserted. 2008/10/23 David W. Hankins <[EMAIL PROTECTED]>: > Just a few things that I think are potential factual errors or > misreads that need clarifying. > > On Tue, Oct 14, 2008 at 09:48:42AM +0200, Iljitsch van Beijnum wrote: >> It's not a question of "problem

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-23 Thread hyunwook cha
Hello, Tony. Thank you for your agreement and interests in the issues being addressed by the draft "draft-cha-ipv6-ra-mo-00.txt". Since I feel that we need to discuss how to solve the issues more, I would like to insert my comments as below. 2008/10/24 Tony Hain <[EMAIL PROTECTED]>: > I agree wi

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-22 Thread hyunwook cha
Hello, Ralph and all. I would like to insert another option into the following list. draft-ietf-ipv6-ra-mo-flags-01.txt I am not clear why this WG document failed to proceed. However, I view this document as nice base docuement since I think that it seems that we do not have clear reason to deprec

Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-15 Thread hyunwook cha
Hello, Thomas. Inline comments are continued below. 2008/10/15 Thomas Narten <[EMAIL PROTECTED]>: > Joseph Hyunwook Cha <[EMAIL PROTECTED]> writes: > >> Hello, Thomas. > >> Thank you for your analysis and suggestions. > >> IMO, as long as M&

Re: Re: [dhcwg] Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-15 Thread Joseph Hyunwook Cha
Hello, Ted. Linux kernel provides rtnl socket interface for applications to get latest received valude of M&O bits in RA. You can obtain wanted informations using libnl APIs, which is the way that DHCPv6 client maintained by Redhat does. (I did not try this, but just checked source codes.) For

Re: Brokenness of specs w.r.t. client behavior with M&O bits

2008-10-14 Thread Joseph Hyunwook Cha
Hello, Thomas. Thank you for your analysis and suggestions. IMO, as long as M&O flags are configured correctly, there is no reason to ignore the bits. So, I do not think that one of two options should be selected and specified exclusively. What I am saying is that it will be ok if there is an

Re: Re: Re: Request for Advices on the draft "draft-cha-ipv6-ra-mo-00.txt"

2008-10-08 Thread Joseph Hyunwook Cha
Hello, James > If the point is to somehow "save resources" by turning off DHCP when > not wanted, isn't that really more of a client implementation issue > than it is a protocol issue? The existing M/O bits only suggest when > starting DHCP might be good. It's up to implementations to determine

Re: [dhcwg] Request for Advices on the draft "draft-cha-ipv6-ra-mo-00.txt"

2008-10-06 Thread hyunwook cha
>>> One part of the situation that may have changed - or, perhaps, wasn't >>> considered - is the case of implementors reading RFC 486[12] without >>> the knowledge of previous discussions of the M/O flags. How will >>> those implementors interpret the text in RFCs 486[12] and 246[12], and >>> ho

Fwd: Re: Request for Advices on the draft "draft-cha-ipv6-ra-mo-00.txt"

2008-09-22 Thread hyunwook cha
Thomas, I would like to add a few comments as below. > > --- Original Message --- > Sender : Thomas Narten<[EMAIL PROTECTED]> > Date : 2008-09-18 22:01 (GMT+09:00) > Title : Re: Request for Advices on the draft "draft-cha-ipv6-ra-mo-00.txt" > > HYUN WOOK CHA <[EMAIL PROTECTED]> writes: >