Reading this discussion, there seem to be a small number of practical
choices.
If the vendor hardware that is / will be handling IPv6 can handle the
flow label as part of the ECMP / LAG calcualtion, than an I-D /
direction to use the flow label seems sensible. (This is about what
will be used, not what off-the-shelf parts might support in some other
box.) While hardware upgrades take a long time, software upgrades are
easier, particularly if it makes the operators traffic handling work better.
Conversely, if the hardware we have to count on will not be able to
handle flow labels for ECMP / LAG hash calculations, then it probably
also won't be able to handle alternate protocols (like UDP-lite). As
such, everything that needs ECMP / LAG handling will need to have TCP or
UDP encapsulations, and given that many of those are protected, we will
want to allow UDP with 0 checksum.
Yours,
Joel
--------------------------------------------------------------------
IETF IPv6 working group mailing list
ipv6@ietf.org
Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
