Hi,

On Jan 19, 2011, at 9:40 PM, Gorry Fairhurst wrote:

> I have now implemented all the corrections in the UDP encaps draft, except 
> for the issue of how we implement transport demultiplexing, where there seems 
> to be multiple ideas. We clearly need to choose either
> the 4-tuple demux or the 6-tuple demux.

Indeed. I think there are three choices

* 6-tuple
* 4-tuple IP/UDP  (with checks against conflicting DCCP connections)
* 4-tuple IP/DCCP (with checks against conflicting UDP ports at UDP 
decapsulation point)

There have been arguments suspecting kernel implementation feasibility of 
6-tuple. People have also wanted to see UDP tunneling work with unmodified DCCP 
implementation. If I understand correctly this would be difficult with the 
first two option. Would there be something wrong with the last option?

I think this is the only remaining open issue (right?). So let's try to reach a 
conclusion. If you don't have clear favorite, is some of the options out of 
question?

- Pasi

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