Bind server to all interfaces instead of public hostname

server-ip defaults to empty (0.0.0.0). Binding to the resolved public IP of
reaperofveriod.nl crashed the server with 'Cannot assign requested address',
since that IP isn't assigned to a local interface (NAT behind the edge router).

server/README.md

@@ -48,6 +48,10 @@ Stop the server cleanly with the console command `stop` (Ctrl-c also works).
 - `server.properties` sets `online-mode=true` (Mojang authentication). Set it to
   `false` in `~/reaper-sky-server/server.properties` to allow unauthenticated
   clients, then restart.
+- `server-ip` is left **empty** on purpose: the server binds all interfaces
+  (`0.0.0.0`) and is reached through the edge router's port-forward. Do **not**
+  put the public hostname/IP here — it isn't assigned to a local interface and
+  the server will crash with `Cannot assign requested address`.
 - `difficulty=hard`, `spawn-protection=0`, `view-distance=10` are set for the
   airship-focused, land-claim-friendly experience.
 - The 19 client-only mods (Iris/shaders, Sodium, Minimap, Jade, JEI, etc.) are

server/deploy.sh

@@ -25,7 +25,7 @@ INSTALLER_URL="https://maven.neoforged.net/releases/net/neoforged/neoforge/${NEO
 # --- config (override via env if you want) ------------------------------------
 SERVER_DIR="${DIR:-$HOME/reaper-sky-server}"
 MEMORY="${MEMORY:-8G}"
-SERVER_IP="${SERVER_IP:-reaperofveriod.nl}"
+SERVER_IP="${SERVER_IP:-}"  # empty = bind all interfaces; reach server via edge port-forward
 DEFAULT_MOTD="Reaper's Sky"
 MOTD="${MOTD:-$DEFAULT_MOTD}"
 MAX_PLAYERS="${MAX_PLAYERS:-10}"