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docs: the second DHCPv6 responder (CAMPAIGN-LOG, BRINGUP item 21)

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The missing GUA was not the firewall: its DHCPv6 server advertises an
address, but an access point on the bench VLAN still runs RA and DHCPv6
in server mode, its Advertise with nothing to give arrives first, and
busybox udhcpc6 keeps the first Advertise it sees. Dev 20260824201945
carries patch 0015 and the last stray dmesg line is gone.

Docs only; no catalog consequence.
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ScottW514
2026-08-24 16:38:17 -04:00
parent 57b428ebd4
commit 76906f3aef
2 changed files with 30 additions and 7 deletions
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docs/BRINGUP.md
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@@ -1555,13 +1555,16 @@ Open items only. Anything closed is in `CAMPAIGN-LOG.md`.
Bench-validated on dev 20260824200726 (CAMPAIGN-LOG 2026-08-24, second
round): the three lines are gone, the kernel is UP at 996 MHz on the
performance governor, Wi-Fi is up on the two-file firmware set, every
port answers over IPv6 on the board's ULA, the export runs. Two things
remain from it: the DHCPv6 server answers NoAddrsAvail and the GUA
prefix is not autonomous, so the board holds no GUA until the network
side hands one out (the client is running and asking); and with no NVS
on the rootfs the firmware loader logs the missing file at ERR level,
which patch 0015 (wlcore asks for the optional file the quiet way)
removes on the next build. Then the item-16 drill and the campaign.
port answers over IPv6 on the board's ULA, the export runs. Dev
20260824201945 adds patch 0015 (wlcore asks for its optional NVS the
quiet way) and the last stray dmesg line is gone. The missing GUA is a
network matter, diagnosed (CAMPAIGN-LOG 2026-08-24, "the second DHCPv6
responder"): the firewall advertises an address, but an access point on
the bench VLAN still runs its own RA and DHCPv6 server, its Advertise
arrives first with nothing to give, and busybox's `udhcpc6` stays with
the first Advertise it sees. Disabling RA and DHCPv6 on that access
point (as on the other two) is the fix; nothing on the board changes.
Then the item-16 drill and the campaign.
**Deliberately not gated:** an armed GRBL job after an underrun cuts at the
stale origin unless homing is required (GRBL mode permits unhomed cutting; the