RE: [mobile-ip] Re: FW: I-D ACTION:draft-tsirtsis-dsmip-problem-0 0.txt

Hi Wolfgang, 

We didn't address solutions yet but it's a good time to
talk about it.

 > As MIPv6 will use IPsec in tunnel mode between MN and HA,

=> Only for RO messages between the MN and CN (HOTI and HOT)

 I 
 > assume a MIPv6 MN in a v4 only foreign network will set up a 
 > "v6 over v6 over v4" bi-directional tunnel to its HA (with 
 > the first v6 being the outer header of the IPsec packet 
 > based on the CoA, and the second v6 being the inner header 
 > based on the HoA), not just a v6 over v4 one.

=> This setup would be applicable to HOTI/HOT messages
only, unless the MN decides to protect all traffic through
the HA, which is not a MIP issue. But for HOTI/HOT this would
be required according to MIPv6. 

Hesham

 > 
 > Wolfgang
 > 
 > > 
 > > George
 > > 
 > > -----Original Message-----
 > > From: Alain Durand [mailto:Alain.Durand=UdXhSnd/[email protected]] 
 > > Sent: Wednesday, July 30, 2003 12:23 AM
 > > To: Tsirtsis George
 > > Cc: Mobile-Ip ([email protected]); 
 > > [email protected]; Soliman
 > > Hesham; 'Thomas Narten'
 > > Subject: [mobile-ip] Re: FW: I-D 
 > > ACTION:draft-tsirtsis-dsmip-problem-00.txt
 > > 
 > > 
 > > Hi George,
 > > 
 > > Thank you for writing this draft, this is an interesting 
 > > perspective. There is one point you do not mention: what if 
 > > the IPv6 node is using directly or indirectly IPv6 in IPv4 
 > > tunnels for its IPv6 connectivity? For example, it may derive 
 > > a 6to4 prefix from its home address and then uses MIPv4.... 
 > > There are extra complexities here that I'm not sure I fully 
 > > understand. Is it a problem space that you intend to cover?
 > > 
 > > 	- Alain.
 > > 
 > > On Tuesday, July 29, 2003, at 12:17  PM, Tsirtsis George wrote:
 > > 
 > > > Hi all,
 > > >
 > > > During the Mobile IP WG meeting in Austria, Hesham and 
 > > myself brought 
 > > > up the issue of mobility management for dual stack nodes.
 > > >
 > > > Thomas N. requested that we put together a problem 
 > > statement so that 
 > > > we can discuss the issue; the draft below was published 
 > > today - it is 
 > > > short and I
 > > > hope to the point - so do read it :)
 > > >
 > > > I have copied v6ops since I think this is a v4 - v6 
 > > migration issue as 
 > > > well as Mobile IPv4 and Mobile IPv6 issue.
 > > >
 > > > Let us know what you think.
 > > >
 > > > George
 > > >
 > > >
 > > >
 > > > -----Original Message-----
 > > > From: [email protected] [mailto:[email protected]]
 > > > Sent: Tuesday, July 29, 2003 5:15 PM
 > > > Subject: I-D ACTION:draft-tsirtsis-dsmip-problem-00.txt
 > > >
 > > >
 > > > A New Internet-Draft is available from the on-line 
 > Internet-Drafts
 > > > directories.
 > > >
 > > >
 > > > 	Title		: Mobility management for Dual stack 
 > > mobile nodes  A
 > > >
 > > >                           Problem Statement
 > > > 	Author(s)	: G. Tsirtsis, H. Soliman
 > > > 	Filename	: draft-tsirtsis-dsmip-problem-00.txt
 > > > 	Pages		: 4
 > > > 	Date		: 2003-7-29
 > > > 	
 > > > This draft discusses the issues associated with mobility 
 > management
 > > > for dual stack mobile nodes. Currently, two mobility management 
 > > > protocols are defined for IPv4 and IPv6. Deploying both 
 > in a dual 
 > > > stack mobile node introduces a number of inefficiencies. 
 > Deployment 
 > > > and operational issues motivate the use of a single mobility 
 > > > management protocol. This draft discusses such motivations. 
 > > The draft 
 > > > also hints on how current MIPv4 and MIPv6 could be 
 > extended so that 
 > > > they can support mobility management for a dual stack node.
 > > >
 > > > A URL for this Internet-Draft is:
 > > > 
 > > 
http://www.ietf.org/internet-drafts/draft-tsirtsis-dsmip-problem-00.tx
> > t
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> > <ATT19898.txt>
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