diff --git a/net_alerter/net_alerter.py b/net_alerter/net_alerter.py
index 6c8c8b0..e594f84 100644
--- a/net_alerter/net_alerter.py
+++ b/net_alerter/net_alerter.py
@@ -1738,7 +1738,7 @@ def parse_ndmsg(data: bytes, msg_type: int) -> None:
         if not mac or mac in ('00:00:00:00:00:00', 'ff:ff:ff:ff:ff:ff'):
             return
 
-        if msg_type == RTM_NEWNEIGH and (state & (NUD_REACHABLE | NUD_STALE | NUD_DELAY | NUD_PROBE)):
+        if msg_type == RTM_NEWNEIGH and (state & NUD_REACHABLE):
             on_arrival(mac, ip or 'unknown')
         elif msg_type == RTM_DELNEIGH:
             on_departure(mac)