YueGuobin c1d0e6ee21
docs(spec): define the gemodel acceptance target
The F section asked for "gemodel loss within +/-5% of target" without
saying what the target is, and the A.1 table gave ranges only. Spell out
the semantics the kernel implements (and that the veth calibration
confirmed): p is the good-to-bad transition, r the bad-to-good
transition, 1-h the loss chance inside the bad state (the good state
loses nothing), mean loss p/(p+r)*(1-h) per direction. The functional
bullet now names that target and how to measure it (per-direction
counters, round-trip reads 1-(1-L)^2, pre-warm ARP when 1-h=100).

No wire-format or grammar change.
2026-10-06 00:21:08 +08:00
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