Re: comments on draft-ietf-shim6-failure-detection-06.txt {2}

[Jari Arkko <jari.arkko@piuha.net>]

> -Page9
>    It is also necessary to
>    track remote address information from the peer.  For instance, if the
>    peer's currently used address is no longer in use, mechanism to relay
>    that information is needed.  The Update message in the SHIM6 protocol
>    is used for this purpose [I-D.ietf-shim6-proto].
> What is "Update message"?
> I can not find "Update message" in [I-D.ietf-shim6-proto] except an
> Update Request message and an Update Acknowledgement message.
> Therfore, I would like to know if they are the same thing.
>
> If they are the same thing, to my understanding, I thinks the Update
> Request message and the Update Acknowledgement message only are used
> to inform a remote peer of local information, not to trace the remote
> peer status at all.
Thanks for noting this. The text should say "Update Request message"
instead. I have now taken this into account in the source XML.

As for the usage of the Update Request message, it is indeed
reporting local information. But once that local information
reaches the receiver, it becomes the receiver's task to take
it into account. For instance, if the sender indicated that
it is no longer able to use address X, the receiver should
refrain from using X from now on.

--Jari