RE: I-D ACTION:draft-hoon-mobileip-undad-00.txt

> Firstly, what L2 trigger can help the deregistration?
> So the NCE management seems to be complicated and be a scheme 
> depending on the L2 technology.
> I think that many people maybe feel uneasy about the 
> combination IPv6 core protocol and L2 module.

Yup. I'm very uncomfortable with using a L2 trigger for this purpose.
When the MN moves to a new link, you cannot assume it is capable of
being able to signal to its old access router on the old link (that it
moved from) to have the old AR delete the NCE.

Thanks.
- Ed

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