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> On Nov 23, 2018, at 11:53 AM, Michael Scharf wrote:
>
> Reviewer: Michael Scharf
> Review result: Ready
>
> This document has been reviewed as part of the transport area review team's
> ongoing effort to review key IETF documents. These comments were written
> primarily for the transport area directors, but are copied to the document's
> authors and WG to allow them to address any issues raised and also to the IETF
> discussion list for information.
>
> When done at the time of IETF Last Call, the authors should consider this
> review as part of the last-call comments they receive. Please
> always CC tsv-art at ietf.org if you reply to or forward this review.
>
> I have reviewed draft-ietf-opsec-ipv6-eh-filtering-06. There are no apparent
> transport issues. The proposed filtering could slow down the deployment of
> experimental protocols that use IPv6 options, but the tradeoffs are explained
> in the document.

Did you notice that Section 3.5.5 advises discarding IPv6 packets whose Next
Header value is unknown -- i.e., IPv6 packets with unknown EHs **or** unknown
transport protocols?  Even for an IPv6 core router in the open Internet?

If not, would that fact change your assessment of this document?

As I noted in my own last call comments, I think that a more nuanced approach
is called for (e.g., as set forth in Section 4.4.5 for unknown option values).

Mike Heard




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