Re: Flow label versus Extension header

[Brian E Carpenter <brc@zurich.ibm.com>]

marcelo bagnulo braun wrote:
...
> The dificulties with the Extension header is clear, i guess:
> - overhead. However, it must be noted that this overhead only occurs 
> when there have been a rehoming event, i.e. when no rehoming has 
> occurred, no need for the extension header in data packets, since there 
> is no need to demultiplex.
> the benefit of this approach is that is cleaner and that is probably 
> simpler (since we can use a 128 bit context tag, making sure that is 
> unique)
>
> Any additional considerations?

Payload MTU size will be reduced for the packets carrying the extension
header. But I think that is a small price to pay for a clean solution.

   Brian