diff --git a/confluent_server/confluent/discovery/protocols/slp.py b/confluent_server/confluent/discovery/protocols/slp.py
index b44c6c2d..4fd1391c 100644
--- a/confluent_server/confluent/discovery/protocols/slp.py
+++ b/confluent_server/confluent/discovery/protocols/slp.py
@@ -111,7 +111,8 @@ def _parse_slp_packet(packet, peer, rsps, xidmap, defer=None, sock=None):
         if defer is None:
             identifier = addr
         else:
-            sock.sendto(b'\x00', peer)
+            probepeer = (peer[0], struct.unpack('H', os.urandom(2))[0] | 1025) + peer[2:]
+            sock.sendto(b'\x00', probepeer)
             defer.append((packet, peer))
             return
     if (identifier, parsed['xid']) in rsps:
@@ -485,7 +486,8 @@ def snoop(handler, protocol=None):
                         continue
                     mac = neighutil.get_hwaddr(peer[0])
                     if not mac:
-                        s.sendto(b'\x00', peer)
+                        probepeer = (peer[0], struct.unpack('H', os.urandom(2))[0] | 1025) + peer[2:]
+                        s.sendto(b'\x00', probepeer)
                         deferpeers.append(peer)
                         continue
                     process_peer(newmacs, known_peers, peerbymacaddress, peer)