On 7/26/23, 4:11 PM, "DNSOP on behalf of George Michaelson" 
<[email protected] on behalf of [email protected]> wrote:
>
>    if QDCOUNT is defined as [0|1] then we have 15 new bits of freedom in
>    the header.

I don't think you can repurpose them.

One concern is backwards compatibility - code in place now wouldn't understand.

The practice of repurposing fields in the header will make it harder for future 
generations of operators to debug the protocol.  Operator goals include 
avoiding outages (via capacity) and mitigating outages (when they happen).  The 
more complex the protocol becomes the harder mitigation becomes.


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