George Michaelson wrote: > if QDCOUNT is defined as [0|1] then we have 15 new bits of freedom in > the header. > > What would be interesting uses of the flow-label? Oh wait.. that's > right, nobody really knows at scale how to use flow-label either. > > I tend to "use it for 15 bits of signalling" because there are a lot > of things I wish were signalled from client to server. > > "I am new code" > "I am at least not ancient code" > "I'm the same as that other guy you saw over <there>" > "I like TCP and want to do a persisting session" > "tell me if you are doing a|b|c|d" > "I like chocolate and want a pony" > > maybe the truth is, we've got 15 bits of zero in the header forever, amen. > > (I deliberately didn't put this in the draft- post from Ray so as not > to pollute an objective discussion of what it is or is not the value > proposition) > > clue-stick hits welcome. Avoid the stomach. > > -G
With a maximum length QNAME inside a UDP query packet there are slightly under a couple thousand bits available for EDNS. Those bits at the end of the packet are easier to get to, ecosystem-wise, so if those use cases are worthwhile they should probably be done with EDNS. -- Robert Edmonds _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
