On 2019-03-06 09:12, Tom Herbert wrote:
> On Wed, Mar 6, 2019 at 9:03 AM Joe Touch <[email protected]> wrote:
>
>> ...
>>
>> And yes, we can build an Internet on the Internet - again, as I've noted
>> repeatedly throughout the IETF. Or we can use UDP fragmentation - which
>> ought to solve all these issues in one shot.
>>
>> So what's the gain here?
>
> Joe,
>
> Please view the proposal in its entirety.
Here are the problems, which I already stated, but seem to need
restating in the exact context of the proposal:
- IP options already cause routers to drop traffic
this is true for both IPv4 and IPv6; making those options look like
IPv6 just gives routers a different WAY to drop them
- DPI looks for transport port numbers that are expected, either for
service gating or even deeper DPI
and GUE isn't one of them
- pushing the actual UDP port numbers used inside a GUE header creates
an "internet in an internet"
as noted above, that's a losing battle we've repeatedly tried
Yes, this may be *intended* for uses other than fragmentation, but will
any of them succeed? Will even the fragmentation one succeed?
That's the point I was trying to make. I hope it's clear enough now.
Joe
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