Development

docker/routlin-dash/app/pages/dhcpleases/view.py

@@ -1,4 +1,5 @@
 import ipaddress
+import json
 import os
 import glob
 from datetime import datetime, timezone
@@ -46,26 +47,10 @@ def _vendor_cell(vendor):
 
 
 def _get_arp_table():
-    """Return {mac_lower: entry} from /proc/net/arp (host-mounted). ATF_COM (0x2) flag means
-    the entry is complete; entries without it (incomplete) are excluded."""
+    """Return {mac_lower: entry} from the ARP cache written by maintenance.py."""
     try:
-        entries = {}
-        with open('/host/proc/net/arp') as f:
-            next(f)  # skip header line
-            for line in f:
-                parts = line.split()
-                if len(parts) < 6:
-                    continue
-                ip    = parts[0]
-                flags = int(parts[2], 16)
-                mac   = parts[3].lower()
-                iface = parts[5]
-                if not (flags & 0x2):
-                    continue
-                if mac == '00:00:00:00:00:00':
-                    continue
-                entries[mac] = {'ip': ip, 'iface': iface, 'state': 'REACHABLE'}
-        return entries
+        with open('/var/lib/misc/arp-cache.json') as f:
+            return json.load(f)
     except Exception:
         return {}
 

docker/routlin-dash/docker-compose.yml

@@ -14,7 +14,6 @@ services:
       - /sys/devices:/sys/devices:ro
       - /etc/localtime:/etc/localtime:ro
       - /var/lib/misc:/var/lib/misc:ro
-      - /proc/net/arp:/host/proc/net/arp:ro
       - /var/log/freeradius:/var/log/freeradius
     environment:
       - PYTHONPATH=/routlin_location