As the Designated Expert for the tunnel type registry, I'd like to respond to 
some of the IESG comments.

Ben Kaduk writes:
> On a more general note, it's pretty weird to me to go and create a
> registry with a fairly long list of initial population but then claim
> that it is not intended to be complete and should be supplemented by
> additional registrations for existing protocols.

This document does *not* create a registry.  If there's somewhere that implies 
it does,
that language should be fixed.   This document merely specifies an alternate 
format in
which the contents of the already existing registry can be retrieved.   It does 
not
make any changes to the entries in the existing registry.

Some registries can already be retrieved in multiple formats.  Let's take
https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
as an example, which can be retrieved in CSV, XML, HTML, or Plain Text formats.
Say a document was written to propose how it should come back in JSON or CBOR 
format.
I doubt you were argue that such a draft would be odd without adding every 
missing port
entry into that same document.

Other IESG members had similar comments as Ben, which I responded to above.
Perhaps the document's wording could be better worded, but I don't think it's 
appropriate
to make any changes to the content of the registry in a draft that merely adds 
another
format for an existing registry, when (like port numbers) the registration 
policy
is not RFC Required.

Suresh Krishnan writes:
> I have a hard time seeing the need for a generic UDP tunnel type (8) and also 
> specific 
> instances of UDP tunneling such as Teredo (14).

Your comment is really on RFC 4087 (which added Teredo to the registry) not on 
this document,
since this document does not change what entries are already in the registry.  
The reason
teredo was added was that the protocol was different and it was important for 
management
purposes, and API exposure to app purposes, to know which protocol was 
configured, 
whereas udp(8) in general was really just a point-to-point configured tunnel 
like an ip-in-ip tunnel was.

Dave

-----Original Message-----
From: Softwires <[email protected]> On Behalf Of Suresh Krishnan via 
Datatracker
Sent: Wednesday, June 12, 2019 9:01 PM
To: The IESG <[email protected]>
Cc: [email protected]; [email protected]; [email protected]; 
[email protected]
Subject: [Softwires] Suresh Krishnan's No Objection on 
draft-ietf-softwire-iftunnel-06: (with COMMENT)

Suresh Krishnan has entered the following ballot position for
draft-ietf-softwire-iftunnel-06: No Objection

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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I have a hard time seeing the need for a generic UDP tunnel type (8) and also 
specific instances of UDP tunneling such as Teredo (14). I think it is better 
to go one way or another but not do both to avoid any confusion. In any case I 
think RFC8085 *should not* be the sole reference for UDP tunneling as it does 
not specify UDP tunneling but provides guidelines for designers of UDP based 
tunneling mechanisms.


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