Re: [dhcwg] behavior on lifetime expiration (Re: comments on draft-ietf-dhc-lifetime-01.txt)
JINMEI Tatuya / 神明達哉 <jinmei@isl.rdc.toshiba.co.jp> Wed, 01 September 2004 17:16 UTC
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Date: Wed, 01 Sep 2004 23:52:32 +0900
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From: JINMEI Tatuya / 神明達哉 <jinmei@isl.rdc.toshiba.co.jp>
To: Stig Venaas <Stig.Venaas@uninett.no>
Subject: Re: [dhcwg] behavior on lifetime expiration (Re: comments on draft-ietf-dhc-lifetime-01.txt)
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>>>>> On Wed, 1 Sep 2004 14:30:29 +0200, >>>>> Stig Venaas <Stig.Venaas@uninett.no> said: > What you write sounds reasonable, but I'm still not sure we should go > into the details. The reason is that we don't know in general what > the behaviour should be, and it's a generic issue. It's obviously a > related issue though. We could as Ted suggests, specify this later > when we have more information. That could either be as an update to > the lifetime RFC, or IMO perhaps better, add some text if an update > to RFC 3315 is done. There seems to be other reasons to update RFC > 3315 too (draft-jinmei-dhc-dhcpv6-clarify-auth-00?). I would first like to note that the suggestion by Ted of leaving it to a later document was followed by his response to me where he agreed (or at least seemed to agree) with my proposal. Secondly, if I understand the sense in this list correctly, I believe my proposal reflects some level of consensus here. Third, I personally think we can reflect the proposal without making the document unnecessarily long. (If you want, I'll try to contribute to some text.) So, I personally think it makes sense to clarify the points at this chance even though the points can be extended to general issues. ...but I don't want to delay this important work due to my pedantic ego. If others still want to leave those points to other documents, I'll obey that decision (but at least I want the "lifetime" document to mention those a bit and to say that those are beyond the scope of the doc). > In general I agree with your distinction between still and moving > clients. What worries me though, is that it might not be possible for > a client to distinguish between movement and renumbering. The fact > that a new prefix is announced in RAs is not sufficient. As I said in my previous message, I basically think we can concentrate on the "still" clients in this document, and do not have to worry too much about miscellaneous subtle cases of moving vs not-actually-moving. Movement detection is itself a difficult challenge (we even have a dedicated wg on this!), so I think it is enough in the scope of dhc wg to show some preliminary considerations on the moving clients (e.g., as shown in Section 18.1.2 of RFC3315.). Besides, I don't see an actual problem in that particular case you raised above, along with my proposed approach. If the client misunderstands that it has moved to a different link while it actually stays in the same link, the client will resend an Information-request message immediately based on the proposed scenario. In this case, however, the legitimate DHCPv6 server should still be there and will respond to the Information-request with valid configuration information. (request storm might be an issue, but confusing events like renumbering should be rare). On the other hand, if the client misunderstands that it stays in the same link while it has actually moved, the client will perhaps have a trouble. Along with the proposed approach, however, I think we don't have to worry about that within the scope of this document; we'll basically note that issues regarding moving clients are difficult and will need future analysis. JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp _______________________________________________ dhcwg mailing list dhcwg@ietf.org https://www1.ietf.org/mailman/listinfo/dhcwg
- [dhcwg] comments on draft-ietf-dhc-lifetime-01.txt JINMEI Tatuya / 神明達哉
- [dhcwg] Re: comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- Re: [dhcwg] Re: comments on draft-ietf-dhc-lifeti… Ted Lemon
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- Re: [dhcwg] Re: comments on draft-ietf-dhc-lifeti… Stig Venaas
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Ted Lemon
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… JINMEI Tatuya / 神明達哉
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… JINMEI Tatuya / 神明達哉
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… JINMEI Tatuya / 神明達哉
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Joe Quanaim
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- RE: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Bernie Volz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… JINMEI Tatuya / 神明達哉
- [dhcwg] behavior on lifetime expiration (Re: comm… JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … Ted Lemon
- Re: [dhcwg] behavior on lifetime expiration (Re: … Joe Quanaim
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … Tim Chown
- Re: [dhcwg] behavior on lifetime expiration (Re: … Joe Quanaim
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … Joe Quanaim
- Re: [dhcwg] behavior on lifetime expiration (Re: … Ted Lemon
- RE: [dhcwg] behavior on lifetime expiration (Re: … Bernie Volz
- RE: [dhcwg] behavior on lifetime expiration (Re: … Bernie Volz
- Re: [dhcwg] behavior on lifetime expiration (Re: … Robert Elz
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Robert Elz
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … Robert Elz
- Re: [dhcwg] behavior on lifetime expiration (Re: … Joe Quanaim
- Re: [dhcwg] behavior on lifetime expiration (Re: … Ted Lemon
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … JINMEI Tatuya / 神明達哉
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… Ted Lemon
- Re: [dhcwg] dhc-lifetime-01: dropping omitted opt… Ted Lemon
- Re: [dhcwg] behavior on lifetime expiration (Re: … Ted Lemon
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] comments on draft-ietf-dhc-lifetime-0… JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … Ted Lemon
- Re: [dhcwg] behavior on lifetime expiration (Re: … Robert Elz
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … JINMEI Tatuya / 神明達哉
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas
- Re: [dhcwg] behavior on lifetime expiration (Re: … Joe Quanaim
- Re: [dhcwg] behavior on lifetime expiration (Re: … Stig Venaas