[MEXT] weird idea about flow bindings

[marcelo bagnulo braun <marcelo at it.uc3m.es>]

Hi,

Here goes a weird idea about how to do the flow bindings.
What about if we only identify flows using the flow label?
I mean, that instead of having to define a format to describe the flows, 
we simply include the flow label value of the specific flow in the flow 
bindings rules.

This would imply basically that the MN host has the policy configured 
about which flow will flow through each CoA.
the first packet of each flow will be received through the primary CoA 
(the one with highest priority).
Upon the reception of the flow, if the MN wants to divert the flow 
through an alternative CoA,  it sends a BU with the Flow binding option, 
including the Flow label value of the flow and the BID associated to the 
CoA it wants to use for this flow.

The main drawbacks of this approach afaict is that the first packets 
will flow through the primary CoA, but i guess these should not be too 
many packets and that there is a need to send a BU per each flow that 
will be sent through a CoA other than the primary one. Maybe these are 
not too many, don't know.

The nice thing is that this is fully extensible since we never have to 
encode bits refering to the upper layer headers in the BU.

Anyway, i thought it may be good to bring this up for discussion.

Regards, marcelo