The welcome banner picked its address with 'hostname -I | awk {print $1}',
so a node with WireGuard up advertised 10.44.0.1 — its own tunnel address,
present on EVERY node — as its web ui / ssh address. Off-tunnel that is
unreachable, and after a headless box moves to a new network it is exactly
the wrong thing to trust (framework-pt, 2026-08-15).
- Pick the default route's source address; fall back to the first address
that is not WireGuard 10.44/16, CGNAT 100.64/10, or loopback.
- Also print http://<hostname>.local when avahi is up — the one address
that survives any DHCP change, which is the real answer for headless
boxes that move between networks.
- scripts/welcome-banner.sh is the new canonical copy, embedded in the
binary (tor-helper pattern): bootstrap::run_welcome_banner_sync rewrites
/etc/profile.d/archipelago.sh on ISO-installed nodes at startup, so the
fix reaches the deployed fleet with the next OTA instead of only fresh
ISOs. Machines without an installer-baked banner are left untouched.
- Same fix inlined in the live ISO builder's PROFILE heredoc
(image-recipe/_archived/build-auto-installer-iso.sh).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
