Where to define IANAtunnelType TC

["Wijnen, Bert (Bert)" <bwijnen@lucent.com>]

Dave Thaler has proposed (and IETF Last Call did not generate
comment or objections) to put it in the IANAifType-MIB as
documented in draft-ietf-ipv6-inet-tunnel-mib-02.txt.

I do not want to just have the discussion between Dave Thaler and 
myself, so I would appreciate if some MIB doctors can chime in.

Here is my original questions to Dave (prefixed with > ) and
my follow up questions when I saw no changes in the document that
went through IETF Last Call

> - Is it wise to put IANAtunnelType TC in IANAifType-MIB?
>   Or would a different module be better.

I see no change, neither do I see an answer as to why this belongs
in IANAifType-MIB

>   In any event, the DESCRIPTION clause of that TC should explain
>   the rules for IANA on when/how to assign new values.

I see no text for that yet, do I?

>   It also seems to me that we may want to update the DESCRIPTION
>   clause of the ianaIfType TC to say something about tunnels and
>   that they better have tunnel(131) as ifType and a listing
>   in the new TC.
> 
I see no proposed text for that either.

I also would like MIB doctors to comment on these IANA considerations
which are in Dave's I-D:

The policy for assigning new IANAtunnelType values is First Come
First Served, as defined in [RFC2434], just as it is for new
IANAifTypes values.  The assignment policy for IANAtunnelType
values should always be identical to the policy for assigning
IANAifType values.

New types of tunnels over IPv4 or IPv6 should not be assigned
IANAifType values.  Instead, they should be assigned
IANAtunnelType values and hence reuse the interface type
tunnel(131).  (Note this restriction does not apply to "tunnels"
which are not over IPv4 or IPv6.)

Previously tunnel types which were not point-to-point tunnels were
problematic in that they could not be properly expressed in the
tunnel MIB, and hence were assigned IANAifType values.  This
document now corrects this problem, and as a result, IANA should
deprecate the sixToFour(215) IANAifType value in favor of the
sixToFour(11) IANAtunnelType value.

Bert