-------- Forwarded Message --------
Subject: Re: draft-ietf-savi-dhcp-30 posted
Date: Thu, 4 Dec 2014 14:12:46 +0000
From: Ralph Droms (rdroms) <[email protected]>
To: Fred Baker (fred) <[email protected]>
CC: Elwyn Davies <[email protected]>, Kathleen Moriarty
<[email protected]>, Ted Lemon <[email protected]>,
[email protected]
<[email protected]>, Barry Leiba
<[email protected]>
Responding to the open issue regarding temporary addresses...
On Dec 3, 2014, at 6:17 PM 12/3/14, Fred Baker (fred) <[email protected]>
wrote:
We have posted draft-ietf-savi-dhcp-30. In that we think we have address all of
Kathleen’s, Ted’s, and Barry’s comments, and most of Elwyn’s. We have a few
open issues that will need to be addressed in a -31 version. Depending on the
guidance we receive, -30 could go for further wider review, or -31 could do
that. We’re waiting for your guidance.
One open issue has to do with what looks like an inconsistency in RFC 3315,
which is being updated in dhc as we speak and we are in correspondence with
Ralph about. This has to do with (Elwin’s comment) the lifetime of a temporary
address assigned using DHCP. As we understand 3315 section 10, all IAs carry a
lifetime for each address they carry. Section 12 says that the IA_TA carrying a
temporary address does not contain a lifetime. Ralph tells us, in private
email, that it does. We think that has to be addressed by dhc.
I've sent a message to the document team that is working on RFC3315bis.
I don't know if this particular issue has already been identified for
clarification.
I wrote to the document team:
My recollection is that the intention for IA_TA is that the addresses in an
IA_TA have lifetimes, but the client is not expected to renew the lease on the
address. That recollection is supported, in my opinion, by this paragraph from
22.5:
An IA_TA option does not include values for T1 and T2. A client MAY
request that the lifetimes on temporary addresses be extended by
including the addresses in a IA_TA option sent in a Renew or Rebind
message to a server. For example, a client would request an
extension on the lifetime of a temporary address to allow an
application to continue to use an established TCP connection.
I'll let you know what comes back from the document team. We may end up
taking the question to the dhc WG as a whole...
- Ralph
[...]
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