diff --git a/confluent_server/confluent/netutil.py b/confluent_server/confluent/netutil.py
index 9bf26bdc..4172eab0 100644
--- a/confluent_server/confluent/netutil.py
+++ b/confluent_server/confluent/netutil.py
@@ -84,13 +84,11 @@ def ip_on_same_subnet(first, second, prefix):
     return ip & mask == oip & mask
 
 
-def ip_is_local(ipaddr):
-    fam, _, _, _, ainfo = socket.getaddrinfo(ipaddr, 0, proto=socket.IPPROTO_UDP)[0]
-    ipn = socket.inet_pton(fam, ainfo[0])
-    if fam == socket.AF_INET6 and ipn.startswith(b'\xfe\x80'):
+def ipn_is_local(ipn):
+    if len(ipn) > 5 and ipn.startswith(b'\xfe\x80'):
         return True
     for addr in get_my_addresses():
-        if fam != addr[0]:
+        if len(addr[1]) != len(ipn):
             continue
         if ipn_on_same_subnet(addr[0], ipn, addr[1], addr[2]):
             return True