Pin Athena LAN interface by permanent MAC

config/install.env.example

@@ -6,7 +6,8 @@ ADMIN_USER=mike
 MODEL_DIR=/srv/mike-ai/models
 
 # Installing a new NVIDIA driver can require one reboot. In that case this
-# installer exits with code 20; rerun the same command after reboot.
+# installer exits with code 20 (NVIDIA) or 21 (stable NIC rename); rerun the
+# same command after reboot.
 INSTALL_NVIDIA_DRIVER=true
 # Optional: auf einen im offiziellen NVIDIA-Repository vorhandenen Hauptzweig
 # festlegen (z. B. 610). Leer lassen, um dem aktuellen stabilen Zweig zu folgen.
@@ -20,8 +21,11 @@ FLUX_MODEL_DIR=/data/models/FLUX.2-klein-4B
 # Headless remote recovery. The ASUS UEFI settings documented in
 # docs/REMOTE_SITE_CHECKLIST.md are additionally required.
 ENABLE_HARDWARE_WATCHDOG=true
-PRIMARY_NETWORK_INTERFACE=enp7s0
-WAKE_ON_LAN_INTERFACE=enp7s0
+# Bind the physical NIC to a stable name independent of its PCIe slot path.
+PRIMARY_NETWORK_MAC=58:11:22:BB:AD:0C
+PERSISTENT_NETWORK_NAME=lan0
+PRIMARY_NETWORK_INTERFACE=lan0
+WAKE_ON_LAN_INTERFACE=lan0
 SSH_KEY_ONLY=true
 
 # WireGuard terminates in a dedicated Docker gateway. The Fritzbox export is a