ToS-like processing of the IPv6 Traffic Class?

[Erik Kline]

> Whether a particular network domain chooses to deploy diffserv
> or not is an entirely local operational decision. I would
> personally advocate deploying diffserv identically for IPv4
> and IPv6, simply to minimise surprises, if products allow it.

Agreed.  Cross-protocol uniformity generally lowers operational
overhead.  (At the very least it reduces cognitive overload.)