lnd resolves the bitcoin RPC address once at startup and never re-resolves;
when bitcoin-core/knots restarts (new container IP) lnd spins on "dial tcp
<old-ip>:8332: no route to host" and its own RPC wedges until lnd restarts
(gate lnd getinfo test 75 failed every iteration on .228, 2026-07-09;
hardening plan §C cascade item). electrumx is already restarted by the
version-switch path — lnd was the only dependent left stranded.
After a successful package.start/restart of a bitcoin backend, restart
running, not-user-stopped address-caching dependents under their own app-op
lock (lock order backend→dependent only, so no deadlock).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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