Re: [MEXT] Issue #17: Multi-homed mobile node can cause routing loop between home agents

[Basavaraj Patil <basavaraj.patil at nokia.com>]

Charlie,

I don't see this issue being specific to MIP6 base spec. The fact that such
a threat may arise as a result of multihoming is outside the scope of MIP6
protocol itself.

IMO this is a non-issue for MIP6.

-Raj


On 10/2/08 6:50 PM, "Charles Perkins" <charles.perkins at earthlink.net> wrote:

> 
> Hello Benjamin,
> 
> I have not seen any further discussion about this issue,
> but I agree that the problem does exist.
> 
> It might be possible to specify that the Home Agent should (or,
> ?may?) use the RFC 2473 "Tunnel Encapsulation Limit Option".
> to help avert the threat.  Otherwise, the loop could persist for
> an annoyingly long amount of time.  It is also possible for the
> home agent to enforce a policy by which a home address on
> a network cannot be bound to a care-of address on the same
> network, but in fact there may be cases where that would be
> a valid binding.
> 
> I hope that other people in the working group will
> express an opinion about this.  At minimum, we could
> certainly include text within the Security Considerations
> section.
> 
> The existing discussion is documented at the following URL:
> http://trac.tools.ietf.org/wg/mext/trac/ticket/17
> 
> Regards,
> Charlie P.
> 
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