From 9f40495e96ea4510550509d8734927cd20de999a Mon Sep 17 00:00:00 2001
From: pavel <pavel.larkin@ikeja.co.za>
Date: Sat, 7 Mar 2026 12:08:54 +0200
Subject: [PATCH] 1208

---
 files/nats_registration_listener.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/files/nats_registration_listener.py b/files/nats_registration_listener.py
index 7b85adc..601502c 100644
--- a/files/nats_registration_listener.py
+++ b/files/nats_registration_listener.py
@@ -72,6 +72,14 @@ PRODUCT_TAG_SLUG = {
     # "fox200": "fox200-auto-upgrade-latest",
 }
 
+# MACs to ignore completely when seen in registrations
+IGNORE_MACS_RAW = [
+    "AA:BB:CC:DD:EE:FF",
+    "D0:6C:37:00:D5:84",
+    "44:D1:FA:7E:3F:65",
+    "C4:93:00:4E:92:7C",
+]
+
 # Global counter for any NetBox-related problems
 NB_PROBLEM_COUNTER = 0
 NB_PROBLEM_LOCK = asyncio.Lock()
@@ -158,6 +166,9 @@ def normalize_mac(mac: str) -> Optional[str]:
     return None
 
 
+IGNORE_MACS = {m for m in (normalize_mac(x) for x in IGNORE_MACS_RAW) if m}
+
+
 def http_get_json(url: str, params: Optional[Dict[str, str]] = None, headers: Optional[Dict[str, str]] = None, timeout: float = NB_TIMEOUT):
     if params:
         url = f"{url}?{urlencode(params)}"
@@ -426,6 +437,16 @@ async def main():
         except Exception:
             pass
 
+        mac_norm = normalize_mac(mac)
+        if mac_norm in IGNORE_MACS:
+            async with print_lock:
+                print(
+                    f"[{ts()}] ignoring registration for mac={mac}",
+                    file=sys.stdout,
+                    flush=True,
+                )
+            return
+
         host_suffix = ""
         action_suffix = ""  # kept; not used
         bell_prefix = ""    # ASCII BEL when action_next present (3x)