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Beatiful idea, how in practice do you suggest this is done, how will my router know if it should just ignore the TOS bytes or do expedited forwarding as configured for given value of TOS byte?

VLANs? Different route paths? Any of a dozen other ways to limit special processing to the networks that have paid for it and dump everybody else into the best-effort pool?

Seems to me these are far more complex solutions than simply rewriting TOS at the borders. And yes, we also rewrite TOS at the borders for Internet traffic. We definitely intend to continue doing this. Steinar Haug, Nethelp consulting, sthaug@nethelp.no