[babel] Genart last call review of draft-ietf-babel-dtls-05

[Dan Romascanu via Datatracker <[e-mail]>]

Reviewer: Dan Romascanu
Review result: Ready

I am the assigned Gen-ART reviewer for this draft. The General Area
Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
like any other last call comments.

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<https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.

Document: draft-ietf-babel-dtls-05
Reviewer: Dan Romascanu
Review Date: 2019-06-25
IETF LC End Date: 2019-07-04
IESG Telechat date: Not scheduled for a telechat

Summary:

The document is Ready from a Gen-ART perspective. A couple of unclear /
redundant statements are mentioned in the 'nits/editorial comments' bullet
below.

Major issues:

Minor issues:

Nits/editorial comments:

1. In section 2.1:

> The default port
   for Babel over DTLS is registered with IANA as the "babel-dtls" port
   (UDP port TBD, see Section 4), and the port exchanging unencrypted
   Babel traffic is registered as the "babel" port (UDP port 6696).

A reference would be desirable here.

2. In section 2.4

> Nodes MUST silently ignore any unprotected
   packet sent over unicast.  When parsing an unprotected packet, a node
   MUST silently ignore all TLVs that are not of type Hello.  Nodes MUST
   also silently ignore any unprotected Hello with the Unicast flag set.

Is the last sentence necessary? Is this case not covered by the statement in
the first sentence?