diff --git a/confluent_server/confluent/discovery/protocols/slp.py b/confluent_server/confluent/discovery/protocols/slp.py
index 588a4bc4..7866e1d9 100644
--- a/confluent_server/confluent/discovery/protocols/slp.py
+++ b/confluent_server/confluent/discovery/protocols/slp.py
@@ -468,15 +468,16 @@ def snoop(handler, protocol=None):
             # will now yield dupe info over time
             known_peers = set([])
             peerbymacaddress = {}
-            neighutil.update_neigh()
             while r:
                 for s in r:
                     (rsp, peer) = s.recvfrom(9000)
                     ip = peer[0].partition('%')[0]
-                    if ip not in neighutil.neightable:
-                        continue
                     if peer in known_peers:
                         continue
+                    if ip not in neighutil.neightable:
+                        neighutil.update_neigh()
+                    if ip not in neighutil.neightable:
+                        continue
                     known_peers.add(peer)
                     mac = neighutil.neightable[ip]
                     if mac in peerbymacaddress:
diff --git a/confluent_server/confluent/discovery/protocols/ssdp.py b/confluent_server/confluent/discovery/protocols/ssdp.py
index c5fe81c4..aac0e375 100644
--- a/confluent_server/confluent/discovery/protocols/ssdp.py
+++ b/confluent_server/confluent/discovery/protocols/ssdp.py
@@ -118,7 +118,6 @@ def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
             newmacs = set([])
             machandlers = {}
             r, _, _ = select.select((net4, net6), (), (), 60)
-            neighutil.update_neigh()
             while r:
                 for s in r:
                     (rsp, peer) = s.recvfrom(9000)
@@ -128,10 +127,12 @@ def snoop(handler, byehandler=None, protocol=None, uuidlookup=None):
                     method, _, _ = rsp[0].split(b' ', 2)
                     if method == b'NOTIFY':
                         ip = peer[0].partition('%')[0]
-                        if ip not in neighutil.neightable:
-                            continue
                         if peer in known_peers:
                             continue
+                        if ip not in neighutil.neightable:
+                            neighutil.update_neigh()
+                        if ip not in neighutil.neightable:
+                            continue
                         mac = neighutil.neightable[ip]
                         known_peers.add(peer)
                         newmacs.add(mac)