G18 RULED (GA-R5, option b): Octavia lb-mgmt recorded out of apex scope + D-139 /64 reserved ...

Gate G18 CLOSED 2026-08-08. Operator ruled option (b): the charm-created Octavia
lb-mgmt-net (IPv6-ULA fc00::/64, charm-generated per R8, regenerates per deploy) is
deliberately charm-owned and OUT of apex scope; the separate D-139 apex GUA lb-mgmt
/64 is kept reserved (distinct MAAS-underlay object, no charm consumer). R8 not
reopened. lb-mgmt is v6-ULA, outside the 10.12->10.13 v4 re-IP. Primary record in
CURRENT-STATE G18 row; annotations on D-101/R8 + D-139. No new D-number. Prep package
docs/audit/g18-lb-mgmt-ipam-ruling-prep-20260808.md. Also: changelog Items 3-5
(live network-create, G18 ruling, Designate real-Stage-7 decision).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Fg98z7QyzwYUs8fsWCn728