[L2tpext] Mirja Kühlewind's No Objection on draft-ietf-l2tpext-keyed-ipv6-tunnel-07: (with COMMENT)

"Mirja Kuehlewind" <ietf@kuehlewind.net> Sun, 30 October 2016 11:04 UTC

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Mirja Kühlewind has entered the following ballot position for
draft-ietf-l2tpext-keyed-ipv6-tunnel-07: No Objection

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COMMENT:
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Two questions:

1) I assume this was in depth discussed in the wg but the given reasoning
for the following MUST does still not justify a MUST for me:
"All packets MUST carry the 64-bit L2TPv3 cookie field."
I would assume that there are possible deployment scenarios e.g. within a
single domain where other existing protection mechanisms might be
sufficient already that you don't really need the cookie...?

2) Further this is not normative language and i wonder if it should be:
"However, for compatibility with existing RFC3931 implementations, the
packets need to be sent with Session ID."
Again I assume that this could be a SHOULD because if you know that you
don't have devices that (only) implement RFC3931, you could probably even
neglect the session id...?