Joe,
You are most likely right. But it is others in SCHC that requested
this, so they get to do the justification, or it gets pruned from the ID.
But I will counter that IPsec/HIP/ESP have specific firewall traversal
mechanisms. These are examples and I don't know how this is going to
play out in an IPv6 firewall.
Someone else gets to figure that out... :)
Bob
On 4/10/23 00:17, to...@strayalpha.com wrote:
Hi, Bob,
Having SCHC as an IP protocol number is more than sufficient to use it
with numerous tunneling protocols and/or layering protocols, including
GRE - which can be tunneled in UDP too.
Why is that - any of numerous other network-layer tunnel protocols
(that demux on network protocol ID) - not sufficient?
If not, IMO the doc would need to provide the details of the tunneling
protocol at the transport layer to justify a transport port assignment.
Joe
—
Dr. Joe Touch, temporal epistemologist
www.strayalpha.com
On Apr 9, 2023, at 2:30 PM, Robert Moskowitz
<rgm-i...@htt-consult.com> wrote:
Joe,
My original use case was for SCHC as an IP Protocol Number with
diet-esp being the sample. WIthout this we have to do a hack on the
SPI management.
My more recent work definitely benefits from SCHC as an Ethertype.
My text does/will cover these use cases for why.
SCHC as a port number was added by others, primarily Pacal Thubert
for UDP firewall traversal. He will be providing the text for that
use case.
Back to writing on this bumpy train ride...
Bob
On 4/6/23 00:13, to...@strayalpha.com wrote:
Hi, Bob,
On Apr 5, 2023, at 4:22 AM, Robert Moskowitz
<rgm-i...@htt-consult.com> wrote:
I am in the process of reving draft
draft-ietf-intarea-schc-ip-protocol-number
and adding support for schc as an ethertype and tcp/udp port number
as I said I would do back in Nov. Sigh.
I understand maybe Ethertype (though I think this is the mistake
that IPv6 made all over again), but for this to get a port number it
would need to be associated with a transport service, not just a
packet type.
Why would that be needed, e.g., vs. running this inside one of any
of the numerous transport tunneling protocols (esp GRE)?
Joe
—
Dr. Joe Touch, temporal epistemologist
www.strayalpha.com
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